Question: What are the geological epoch which start with the letter swenlock
Paraphrase: What are the geographical age which begin with the letter swenlock
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q754897 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'wenlock')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Wenlock, Wenlock