Question: What chemical compound has a short term exposure limit and is partly oxygen?
Paraphrase: Which partly oxygen chemical compound has a short term exposure limit?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q11173 . ?ent wdt:P2407 ?obj . ?ent wdt:P527 wd:Q629. } ORDER BY ASC(?obj)LIMIT 5 
Answer: osmium tetroxide, acrylamide, nitroglycerin, acrylamide, isophorone diisocyanate