what is the {start time} for {Billie Jean King} has {award received} as {Library of Congress Living Legend} ?
When did Billie Jean King win the Library of Congress Living Legend Award?
When did Billie Jean King receive her award as a "Library of Congress Living Legend"?
SELECT ?o WHERE { resource:Billie_Jean_King property:award_received ?u . ?u property:start_time ?o . ?u property:award_received resource:Library_of_Congress_Living_Legend }
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?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P166> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q6542686> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q54527 p:P166 ?s . ?s ps:P166 wd:Q6542686 . ?s pq:P580 ?value}