What what is triumphal arch heritage designationed by MHC and also which starts with letter p
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q143912 . ?sbj wdt:P1435 wd:Q10387684 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'p')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
triumphal arch: Q143912 monument historique classé: Q10387684