Question: Tell me physical phenomenon whose name has the word surface in it.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1293220 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'surface')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25