What is {educated at} of {Alexander Radishchev} that is {start time} is {1766-1-1} ?
What school did Alexander Radishchev attend beginning in 1766?
Where was Alexander Radishchev going to school at the start of 1766?
SELECT ?p WHERE { FILTER ( CONTAINS ( YEAR ( ?v ) , '1766' ) ) . ?f property:start_time ?v . resource:Alexander_Radishchev property:educated_at ?f . ?f property:educated_at ?p }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q217470> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P69> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1766-1-1>
} 

SELECT ?obj WHERE { wd:Q217470 p:P69 ?s . ?s ps:P69 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1766')) }