Question: where was the first episode of walking dead filmed
[{'answer': 'Atlanta', 'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'start_paragraph_id': 3, 'start_character': 61, 'end_paragraph_id': 3, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32520884', 'title': 'Days Gone Bye (The Walking Dead)', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 1157, 'bleu_score': 0.956953654613053, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3867260449870532965}, 'section': 'Section::::Production.:Filming.\n'}]}]