what is the {point in time} for {Albert Einstein} has {award received} as {Honorary Doctor of the University of Madrid Complutense} ?
On what date Albert Einstein received hisHonorary Doctor of the University of Madrid Complutense?
When did Albert Einstein receive the Honorary Doctor of the University of Madrid Complutense?
SELECT ?z WHERE { ?t property:award_received resource:honorary_doctor_of_the_University_of_Madrid_Complutense . resource:Albert_Einstein property:award_received ?t . ?t property:point_in_time ?z }
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} 

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