Question: In the signed language of Alexander Berkman, what label in sign language can be found at Csc-angles-spreadthesign.ogv?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q195390 wdt:P1412 ?answer . ?answer wdt:P2919 ?x FILTER(contains(?x,'Csc-anglès-spreadthesign.ogv'))}