. . . . "Returns the presentations a given agent is recorded for, either as speaker (wd:P823) or as one of the authors (pav:authoredBy), with a role column saying which of the two it is. Conference programmes usually list authors and name a speaker only for invited talks, so imported programme presentations show up as author. The date is the start date (schema:startDate in either scheme) or else dct:date, and the event is the dct:isPartOf target. Newest first." . . . "Get the presentations of an agent" . . "prefix rdfs: \nprefix dct: \nprefix np: \nprefix npa: \nprefix npx: \nprefix wd: \nprefix pav: \nprefix schema: \nprefix schemaold: \n\nselect ?presentation ?presentation_label ?role ?date ?event ?event_label ?np (\"^\" as ?np_label) where {\n {\n select ?np ?presentation ?role (sample(?plabel) as ?presentation_label) (min(?d) as ?date)\n (sample(?ev) as ?event) (sample(?evlabel) as ?event_label) where {\n graph ?a {\n ?presentation pav:authoredBy|wd:P823 ?_agent_iri .\n ?presentation a wd:Q604733 .\n }\n graph npa:graph {\n ?np np:hasAssertion ?a .\n ?np npx:introduces ?presentation .\n ?np np:hasPublicationInfo ?pi .\n ?np npa:hasValidSignatureForPublicKeyHash ?pubkey .\n filter not exists { ?npx npx:invalidates ?np ; npa:hasValidSignatureForPublicKeyHash ?pubkey . }\n filter not exists { ?np npx:hasNanopubType npx:ExampleNanopub . }\n }\n bind(if(exists { graph ?a { ?presentation wd:P823 ?_agent_iri } }, \"speaker\", \"author\") as ?role)\n optional { graph ?a { ?presentation rdfs:label ?plabel . } }\n optional { graph ?a { ?presentation schema:startDate ?startDateA . } }\n optional { graph ?a { ?presentation schemaold:startDate ?startDateB . } }\n optional { graph ?a { ?presentation dct:date ?olddate . } }\n bind(coalesce(str(?startDateA), str(?startDateB), str(?olddate)) as ?d)\n optional {\n graph ?a { ?presentation dct:isPartOf ?ev . }\n optional { graph ?a { ?ev rdfs:label ?evlabelA . } }\n optional { graph ?pi { ?ev rdfs:label ?evlabelB . } }\n }\n bind(coalesce(?evlabelA, ?evlabelB) as ?evlabel)\n } group by ?np ?presentation ?role\n }\n} order by desc(?date) ?presentation_label" . . "Tobias Kuhn" . "2026-11-11T18:25:51.934+01:00"^^ . . . . . "Get the presentations of an agent" . . . . . . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCwUtewGCpT5vIfXYE1bmf/Uqu1ojqnWdYxv+ySO80ul8Gu7m8KoyPAwuvaPj0lvPtHrg000qMmkxzKhYknEjq8v7EerxZNYp5B3/3+5ZpuWOYAs78UnQVjbHSmDdmryr4D4VvvNIiUmd0yxci47dTFUj4DvfHnGd6hVe5+goqdcwIDAQAB" . "dv4QTabYbQXx+Lx/tBwohXyLCYsGhDGUib+l3ytI4gnWOexAJzJQ33oKNoZ2QY8Zhw4MbJLpq3gZnhv9ONw/bBQGLhRjfiHDDQVj7PqdOghN+B0uUOZ+E4rddQsLEOG8ezMpTWU3Kc9y3NVfHkkPqiJDN2XoDZRWMtQDxllDlM4=" . . .