What are the chemical phenomenon which start with the letter corrosion
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q3382117 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'corrosion')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
chemical phenomenon: Q3382117