Who ruled here? (point-in-polygon + time)

Label	S	E
Deutsches Reich @en	1890	1918
Königreich Preußen @en	1890	1907
Berlin @en	1881	1920

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caviri.github.io/rete

Run this query in the playground → 3 rows · 37.6 s · 56.0 MB of 168.3 MB read over HTTP range · no server, no download — the query runs in your browser.

The query

PREFIX ex: <http://ex/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX geo: <http://www.opengis.net/ont/geosparql#> PREFIX geof: <http://www.opengis.net/def/function/geosparql/> SELECT ?label ?s ?e WHERE { ?x rdfs:label ?label ; ex:startYear ?s ; ex:endYear ?e ; geo:hasGeometry/geo:asWKT ?w . FILTER(?s <= 1900 && ?e >= 1900) FILTER(geof:sfContains(?w, "POINT(13.405 52.52)"^^geo:wktLiteral)) }

rete playground · documentation · github.com/caviri/rete