what is the {point in time} for {Albert I, Prince of Monaco} has {award received} as {Alexander Agassiz Medal} ?
when did albert I, prince of monaco win the alexander agassiz medal?
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select distinct ?value  where {
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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/Q1411550> .
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} 

Tell me when Albert I, prince of Manaco, won the Alexander Agassiz medal.