What is {position held} of {Jean le Rond D'Alembert} that is {start time} is {1772-0-0} ?
What position did Jean le Rond D'Alembert hold in 1772?
What position did Jean le Rond D'Alembert begin holding in 1772?
SELECT ?b WHERE { resource:Jean_le_Rond_d'Alembert property:position_held ?r . ?r property:position_held ?b . ?r property:start_time ?i . FILTER ( CONTAINS ( YEAR ( ?i ) , '1772' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q153232> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1772-0-0>
} 

SELECT ?obj WHERE { wd:Q153232 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1772')) }