What is {end time} and {start time} of {{Michael Schumacher} has {occupation} as {Formula One driver}}
Michael Schumacher was a Formula One racer over what dates?
What is the time period that Michael Schumacher worked as a Formula One driver?
SELECT ?x ?t WHERE { ?l property:end_time ?x . ?l property:start_time ?t . ?l property:occupation resource:Formula_One_driver . resource:Michael_Schumacher property:occupation ?l }
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