🔭 The observatory family tree (P279+ descendants)

Subclass	Name	Description	+1
Q148578	space telescope @en	instrument in outer s…	…
Q1875651	airborne observatory…	aircraft which carrie…	…
Q2532203	public observatory @en	astronomical observat…	…
Q66737933	radio astronomy obser…	astronomical observat…	…

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caviri.github.io/rete

Run this query in the playground → 18 rows · 2.7 s · 9.5 MB of 2.03 GB read over HTTP range · no server, no download — the query runs in your browser.

The query

PREFIX wd: <http://www.wikidata.org/entity/> PREFIX wdt: <http://www.wikidata.org/prop/direct/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX schema: <http://schema.org/> PREFIX rete: <https://w3id.org/rete/> SELECT ?sub ?name ?description ?instances WHERE { ?sub wdt:P279+ wd:Q1254933 . ?sub rdfs:label ?name . FILTER(lang(?name) = "en") ?sub schema:description ?description . FILTER(lang(?description) = "en") OPTIONAL { ?sub rete:instanceCount ?instances } } LIMIT 60

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