What is <astronomical filter> of <visible spectrum> ?
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Which is the astronomical filter of visible spectrum?
SELECT DISTINCT ?t WHERE { ?t property:astronomical_filter resource:visible_spectrum }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject>  ?answer. ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1227> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q76299>. }
select distinct ?answer where { ?answer wdt:P1227 wd:Q76299}
Sloan Digital Sky Survey Bradford Robotic Telescope Anglo-Australian Telescope Isaac Newton Telescope