Question: What are technical specification which start with the letter w
Paraphrase: What are specialized detail which begin with the letter w
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q20819677 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'w')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: WAI-ARIA, WAI-ARIA, WebID, WebID, WebP Container Specification, WebP Container Specification, WavPack 4.5 Binary File / Block Format, WavPack 4.5 Binary File / Block Format, WARC Format 1.0 specification, WARC Format 1.0 specification, WARC Format 1.1 specification, WARC Format 1.1 specification