what is the {start time} for {Sandra Day O'Connor} has {position held} as {Associate Justice of the Supreme Court of the United States} ?
On which date was Supreme Court Associate Justice of the US, Sandra Day O'Connor sworn in?
When did Sandra Day O'Connor become the Associate Justice of the Supreme Court of the United States?
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?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
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?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

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