Tell me the hypothetical planet that has Sun as a parent astronomical body and starts with the letter v?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q5961279 . ?sbj wdt:P397 wd:Q525 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'v')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
hypothetical planet: Q5961279 sun: Q525