Question: when did they start dropping the ball in times square
[{'answer': 'December 31 , 1907', 'provenance': [{'wikipedia_id': '3597669', 'title': 'Times Square Ball', 'start_paragraph_id': 52, 'start_character': 506, 'end_paragraph_id': 52, 'end_character': 524, 'bleu_score': 1.0, 'section': 'Section::::History.:Early celebrations, first ball (1907–1919).\n'}]}, {'provenance': [{'wikipedia_id': '3597669', 'title': 'Times Square Ball', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 445, 'bleu_score': 0.9751504244977051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11962235232851058817}, 'section': 'Section::::Abstract.'}]}]