Question: the afl-cio is considered what type of group
[{'answer': 'federation of unions', 'provenance': [{'wikipedia_id': '178766', 'title': 'AFL–CIO', 'start_paragraph_id': 1, 'start_character': 99, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '178766', 'title': 'AFL–CIO', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 413, 'bleu_score': 0.92860998190983, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15269947248593405343}, 'section': 'Section::::Abstract.'}]}]