https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/Head https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://www.nanopub.org/nschema#hasAssertion https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/assertion https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://www.nanopub.org/nschema#hasProvenance https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/provenance https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/pubinfo https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/assertion https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/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date is read only from the resource's own current defining nanopublication - validly signed, not invalidated and not superseded - rather than from any assertion about it anywhere in the store, so that a third party cannot decide what the form suggests.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/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/get-presentation-defaults http://purl.org/dc/terms/license http://www.apache.org/licenses/LICENSE-2.0 https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/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/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/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/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/get-presentation-defaults https://w3id.org/kpxl/grlc/endpoint https://w3id.org/np/l/nanopub-query-1.1/repo/full https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/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/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/provenance https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/assertion http://www.w3.org/ns/prov#wasAttributedTo https://orcid.org/0000-0002-1267-0234 https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/pubinfo https://orcid.org/0000-0002-1267-0234 http://xmlns.com/foaf/0.1/name Tobias Kuhn https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://purl.org/dc/terms/created 2026-09-08T10:40:15Z https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://purl.org/dc/terms/creator https://orcid.org/0000-0002-1267-0234 https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://purl.org/dc/terms/license https://creativecommons.org/licenses/by/4.0/ https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://purl.org/nanopub/x/embeds https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/get-presentation-defaults https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://purl.org/nanopub/x/supersedes https://w3id.org/np/RA5KoJwo5z6Ap1Rzt-n2TkUOWV0CpgNEeaItCNB3g66xk https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI http://www.w3.org/2000/01/rdf-schema#label Get the form defaults for a presentation at an event https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromProvenanceTemplate https://w3id.org/np/RA7lSq6MuK_TIC6JMSHvLtee3lpLoZDOqLJCLXevnrPoU https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RA-N4_kFxcruvBTlo1yJv29E4SLOXsx5KO_th69PprMrA https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RACJ58Gvyn91LqCKIO9zu1eijDQIeEff28iyDrJgjSJF8 https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RARJj78P72NR5edKOnu_f4ePE9NYYuW2m2pM-fEoobMBk https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromPubinfoTemplate https://w3id.org/np/RAoTD7udB2KtUuOuAe74tJi1t3VzK0DyWS7rYVAq1GRvw https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate https://w3id.org/np/RAEFAt-QcFK0ZhqfvlsmS10BnzGJA0xwOICZXkO-ai87k https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/sig http://purl.org/nanopub/x/hasAlgorithm RSA https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/sig http://purl.org/nanopub/x/hasPublicKey MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/sig http://purl.org/nanopub/x/hasSignature rtFVPLTtdYA6xjcPFvHb76MmfNBCVxA+bxZkNI+clpkhZOQvzW7jGuZ2IRa+Dz/Fk0+MXtYPZm1q/kFevOVgQ8SFvipMNfsq4pW4W1D5gDG5VXLSrHrI0Z0u+6We7d3RWiYoUBOZK1yQJ+eEfNSiTVhkYExLZIte2v9sZqte6vM= https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/sig http://purl.org/nanopub/x/hasSignatureTarget https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI https://w3id.org/np/RAb5b5m5KrDACHHXBsJ_7wHitbZ2kmQDMrU0RiWzxSbTI/sig http://purl.org/nanopub/x/signedBy https://orcid.org/0000-0002-1267-0234