Which decimal classification that has edition DDC 23 and which that starts with the letter c
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1207369 . ?sbj wdt:P747 wd:Q15222117 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'c')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
decimal classification: Q1207369 ddc 23: Q15222117