What is <British Book Trade Index ID> of <John Knox> ?
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Which is the British Book Trade Index ID for John Knox?
SELECT DISTINCT ?w WHERE { resource:John_Knox property:British_Book_Trade_Index_ID ?w }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q189937> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2945> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q189937 wdt:P2945 ?answer}