https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/Head https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://www.nanopub.org/nschema#hasAssertion https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/assertion https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://www.nanopub.org/nschema#hasProvenance https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/provenance https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/pubinfo https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/assertion https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults http://purl.org/dc/terms/description A fill query for the add-a-presentation action: given an event or space, returns its own start date, so that the publish form opens with the presentation's start date already set to when the event begins and the user only adjusts the time. Returns a single row, or none at all when the resource has no start date, which the form treats as a no-op. The date is read only from the resource's own current defining nanopublication - validly signed, not invalidated and not superseded - rather than from any assertion about it anywhere in the store, so that a third party cannot decide what the form suggests. Both the http:// and https:// schema.org spellings are accepted, Spaces conventionally using the former, and a fractional-second part is trimmed so the default matches the lexical form these events are normally written in. The fractional-second part is trimmed with the character class [.] rather than an escaped dot, so that the SPARQL carries no backslash at all: a backslash has to survive TriG unescaping to reach the query engine, and the first version of this query did not, which made it a lexical error rather than a wrong answer. https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults http://purl.org/dc/terms/license http://www.apache.org/licenses/LICENSE-2.0 https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/kpxl/grlc/grlc-query https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults http://www.w3.org/2000/01/rdf-schema#label Get the form defaults for a presentation at an event https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults https://w3id.org/kpxl/grlc/endpoint https://w3id.org/np/l/nanopub-query-1.1/repo/full https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults https://w3id.org/kpxl/grlc/sparql prefix np: <http://www.nanopub.org/nschema#> prefix npa: <http://purl.org/nanopub/admin/> prefix npx: <http://purl.org/nanopub/x/> prefix schema: <https://schema.org/> prefix schemaold: <http://schema.org/> select ?startDate where { graph npa:graph { ?np npa:hasValidSignatureForPublicKeyHash ?pubkey ; np:hasAssertion ?a ; npx:introduces ?_resource_iri . filter not exists { ?inv npx:invalidates ?np ; npa:hasValidSignatureForPublicKeyHash ?pubkey . } filter not exists { ?newer npx:supersedes ?np . } } optional { graph ?a { ?_resource_iri schemaold:startDate ?sdA . } } optional { graph ?a { ?_resource_iri schema:startDate ?sdB . } } bind(coalesce(?sdA, ?sdB) as ?sd) filter(bound(?sd)) bind(replace(str(?sd), "[.][0-9]+", "") as ?startDate) } limit 1 https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/provenance https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/assertion http://www.w3.org/ns/prov#wasAttributedTo https://orcid.org/0000-0002-1267-0234 https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/pubinfo https://orcid.org/0000-0002-1267-0234 http://xmlns.com/foaf/0.1/name Tobias Kuhn https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/dc/terms/created 2026-09-09T11:58:36Z https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/dc/terms/creator https://orcid.org/0000-0002-1267-0234 https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/dc/terms/license https://creativecommons.org/licenses/by/4.0/ https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/nanopub/x/embeds https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/get-presentation-defaults https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/nanopub/x/supersedes https://w3id.org/np/RA7b5s9_6L7vjbGU81JgZ0bMO3Jcxh7hkEPf0LhxJsgCo https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://purl.org/nanopub/x/supersedes https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU http://www.w3.org/2000/01/rdf-schema#label Get the form defaults for a presentation at an event https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromProvenanceTemplate https://w3id.org/np/RA7lSq6MuK_TIC6JMSHvLtee3lpLoZDOqLJCLXevnrPoU https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RA-N4_kFxcruvBTlo1yJv29E4SLOXsx5KO_th69PprMrA https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RACJ58Gvyn91LqCKIO9zu1eijDQIeEff28iyDrJgjSJF8 https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RARJj78P72NR5edKOnu_f4ePE9NYYuW2m2pM-fEoobMBk https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RAoTD7udB2KtUuOuAe74tJi1t3VzK0DyWS7rYVAq1GRvw https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate https://w3id.org/np/RAEFAt-QcFK0ZhqfvlsmS10BnzGJA0xwOICZXkO-ai87k https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/sig http://purl.org/nanopub/x/hasAlgorithm RSA https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/sig http://purl.org/nanopub/x/hasPublicKey MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/sig http://purl.org/nanopub/x/hasSignature h2PegHHtgDQHH+fkARm8LTd8rY+Fgl89gUQ3zCusmilZilOK4IKsPR5W9P5I6ENAd0n/CWJhP4XqZWfHyibPkdL07gxdBJWGlyWia7OWsFJk76EPlv3ZBPsAyUOuwzOM31jU4dNN7N58+xmhlGQ7YBht0ZsaJyNyT/ek2fW8tBA= https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/sig http://purl.org/nanopub/x/hasSignatureTarget https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU https://w3id.org/np/RAyvLOzNTzQrGJKtldHV8pBby0w2KqzVmyySuU1AKN6XU/sig http://purl.org/nanopub/x/signedBy https://orcid.org/0000-0002-1267-0234