Name a cryptocurrency that  starts with letter B
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q13479982 . ?sbj wdt:P913 wd:Q23055403 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'b')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
cryptocurrency: Q13479982 bitcoin sign: Q23055403