Question: when did the yankees become a baseball team
[{'answer': 'after the 1902 season', 'provenance': [{'wikipedia_id': '7587984', 'title': 'History of the New York Yankees', 'start_paragraph_id': 1, 'start_character': 207, 'end_paragraph_id': 1, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7587984', 'title': 'History of the New York Yankees', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 819, 'bleu_score': 0.986253478180058, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7759761723611961168}, 'section': 'Section::::Abstract.'}]}]