Question: what is an experiment that starts with the letter t.
Paraphrase: what is an explore that begins with the letter t.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q101965 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 't')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: The Peckham Experiment, The Peckham Experiment, Tornado simulator-MHS 230, Tornado simulator-MHS 230, two-photon double-slit experiment, two-photon double-slit experiment, TOTEM experiment, TOTEM experiment, Torricelli's experiment, Torricelli's experiment, thermal conductivity of water demonstration, thermal conductivity of water demonstration, thermal conductivity of solids demonstration, thermal conductivity of solids demonstration