Question: total number of planet in our solar system
[{'answer': 'eight', 'provenance': [{'wikipedia_id': '26903', 'title': 'Solar System', 'start_paragraph_id': 1, 'start_character': 200, 'end_paragraph_id': 1, 'end_character': 205, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26903', 'title': 'Solar System', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 422, 'bleu_score': 0.796033535601111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2433923079291923073}, 'section': 'Section::::Abstract.'}]}]