what is the {point in time} for {Arundhati Roy} has {award received} as {National Film Award for Best Screenplay} ?
When did Arundhati Roy receive the National Film Award for Best Screenplay?
when was National Film Award for Best Screenplay  award received of the Arundhati Roy?
SELECT ?i WHERE { resource:Arundhati_Roy property:award_received ?s . ?s property:award_received resource:National_Film_Award_for_Best_Screenplay . ?s property:point_in_time ?i }
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