what is the {start time} for {Joseph-Louis Lagrange} has {member of} as {Prussian Academy of Sciences} ?
When did Joseph-Louis Lagrange become a member of the Prussian Academy of Sciences?
when is the {start time} for {Joseph-Louis Lagrange} who {member of} as {Prussian Academy of Sciences} ?
SELECT ?g WHERE { resource:Joseph-Louis_Lagrange property:member_of ?h . ?h property:start_time ?g . ?h property:member_of resource:Royal_Prussian_Academy_of_Sciences }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q80222> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P463> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q329464> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q80222 p:P463 ?s . ?s ps:P463 wd:Q329464 . ?s pq:P580 ?value}