How many {founded by} are to/by {Soviet Union} ?
How many were founded by the Soviet Union?
SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P112 wd:Q15180 }
SELECT (COUNT(?sub) AS ?subs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sub .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P112> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q15180 .
} 

The USSR was founded by how many?