Question: who gave the cowboys the nickname america's team
[{'answer': 'Bob Ryan', 'provenance': [{'wikipedia_id': '1817340', 'title': "America's Team", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '1817340', 'title': "America's Team", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 181, 'bleu_score': 0.9402297675816911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11607798216545011276}, 'section': 'Section::::History.\n'}]}]