https://w3id.org/np/RA1saJ6qsQ5dXvFX6vii5eji_DVuTbBAmLziuFfa_0RbI
has assertion: assertion
has provenance: provenance
has publication info: pubinfo
type: Nanopublication
created: 2026-08-19T13:21:17Z
creator: Tobias Kuhn
license: https://creativecommons.org/licenses/by/4.0/
embeds: Get presentations for event

Get presentations for event
description: Returns all presentations of the given event, with label, date, time, location, presenter, and nanopub link.
license: LICENSE-2.0
type: grlc-query
sparql: prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> prefix dct: <http://purl.org/dc/terms/> prefix np: <http://www.nanopub.org/nschema#> prefix npa: <http://purl.org/nanopub/admin/> prefix npx: <http://purl.org/nanopub/x/> prefix wd: <http://www.wikidata.org/entity/> prefix schema: <https://schema.org/> select ?presentation ?presentation_label ?date ?time ?location ?speaker ?np ("^" as ?np_label) where { graph npa:graph { ?np npa:hasValidSignatureForPublicKeyHash ?pubkey . filter not exists { ?npx npx:invalidates ?np ; npa:hasValidSignatureForPublicKeyHash ?pubkey . } filter not exists { ?np npx:hasNanopubType npx:ExampleNanopub . } ?np dct:created ?npdate . ?np np:hasAssertion ?a . ?np npx:introduces ?presentation . } values ?_event_multi_iri {} graph ?a { ?presentation a wd:Q604733 . ?presentation dct:isPartOf ?_event_multi_iri . ?presentation wd:P823 ?speaker . } optional { graph ?a { ?presentation rdfs:label ?presentation_label . } } optional { graph ?a { ?presentation dct:date ?olddate . } } optional { graph ?a { ?presentation schema:startDate ?startDate . } } optional { graph ?a { ?presentation schema:endDate ?endDate . } } optional { graph ?a { ?presentation schema:location ?location . } } bind(coalesce(strbefore(str(?startDate), "T"), str(?olddate)) as ?date) bind(substr(strafter(str(?startDate), "T"), 1, 5) as ?starttime) bind(substr(strafter(str(?endDate), "T"), 1, 5) as ?endtime) bind(coalesce(concat(?starttime, "\u2013", ?endtime), ?starttime) as ?time) bind(coalesce(str(?startDate), str(?olddate)) as ?sortkey) } order by desc(?sortkey)

sig
has algorithm: RSA
signed by: Tobias Kuhn