What are the national symbol which start with the letter palestine
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1128637 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'palestine')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
national symbol: Q1128637