What what is vaccine vaccine for  by rubella and which that starts with v
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q134808 . ?sbj wdt:P1924 wd:Q155857 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'v')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
vaccine: Q134808 rubella: Q155857