Name a professional sports league starting in September that starts with letter P
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q15991290 . ?sbj wdt:P4794 wd:Q123 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'p')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
professional sports league: Q15991290 september: Q123