What is {educated at} of {Vint Cerf} that is {academic major} is {mathematics} ?
At what University did Vint Cerf achieve his Mathematics degree?
Where did Vint Cerf have an academic major of mathematics?
SELECT ?e WHERE { ?m property:educated_at ?e . resource:Vint_Cerf property:educated_at ?m . ?m property:academic_major resource:mathematics }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q92743> .
?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/P812> <http://wikidata.dbpedia.org/resource/Q395>
} 

SELECT ?obj WHERE { wd:Q92743 p:P69 ?s . ?s ps:P69 ?obj . ?s pq:P812 wd:Q395 }