Question: when did the walking dead season 1 start
[{'answer': 'October 31 , 2010', 'provenance': [{'wikipedia_id': '29941683', 'title': 'The Walking Dead (season 1)', 'start_paragraph_id': 1, 'start_character': 115, 'end_paragraph_id': 1, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29941683', 'title': 'The Walking Dead (season 1)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 598, 'bleu_score': 0.9276281369144621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12266186059581580087}, 'section': 'Section::::Abstract.'}]}]