Where was founded the trade union with whom Amalgamated Clothing Workers of America is affiliated?
SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/Amalgamated_Clothing_Workers_of_America> <http://dbpedia.org/ontology/affiliation> ?x . ?x <http://dbpedia.org/property/founded> ?uri  . }
Amalgamated_Clothing_Workers_of_America