Question: Which self propelled gun originated in the Soviet Union?
Paraphrase: Which gun is use by the Soviet Union?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P495 wd:Q15180 . ?sbj wdt:P31 wd:Q272574 } 
Answer: SU-122, SU-14, SU-100Y Self-Propelled Gun, SU-152, 2A3 Kondensator 2P, Uralmash-1