Question: What are the image compression which start with the letter g
Paraphrase: What image compression starts with "g"?
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q412438 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'g')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Graphics Interchange Format, Graphics Interchange Format