Question: What what isazane has effect by ammonia exposureand also which starts with letter A
Paraphrase: What what isazane has impact by ammonia exposureand additionally which begins with letter A
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q4832226 . ?sbj wdt:P1542 wd:Q21167772 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'a')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Ammonia, ammonia