Question: when did the first light bulb come out
[{'answer': 'December 31 , 1879', 'provenance': [{'wikipedia_id': '29778', 'title': 'Thomas Edison', 'start_paragraph_id': 31, 'start_character': 257, 'end_paragraph_id': 31, 'end_character': 275, 'bleu_score': 1.0, 'section': 'Section::::Menlo Park laboratory (1876–1886).:Electric light.\n'}]}, {'provenance': [{'wikipedia_id': '29778', 'title': 'Thomas Edison', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 400, 'bleu_score': 0.9363867154549941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9465197440445416598}, 'section': 'Section::::Menlo Park laboratory (1876–1886).:Electric light.\n'}]}]