Which is the railway tunnel with terminus Erstfeld and contains the word base in it's name?
SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q1311958 . ?sbj wdt:P559 wd:Q69642 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'base')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
railway tunnel: Q1311958 erstfeld: Q69642