Question: how many seasons of andy griffith show are there
[{'answer': 'eight', 'provenance': [{'wikipedia_id': '113139', 'title': 'The Andy Griffith Show', 'start_paragraph_id': 1, 'start_character': 167, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '113139', 'title': 'The Andy Griffith Show', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 294, 'bleu_score': 0.8983343737277121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3477678819541388048}, 'section': 'Section::::Abstract.'}]}]