Which is the musical by the librettist Alan Jay Lerner that starts with the letter p?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q2743 . ?sbj wdt:P87 wd:Q961893 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'p')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
musical: Q2743 alan jay lerner: Q961893