Question: What are  the boat type  which start with the letter y
Paraphrase: What are the vessel sort which begin with the letter y
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q16103215 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'y')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: yole, yole, Yal, Yal, Yoal, Yoal