Question: how many states of matter are often found on earth
[{'answer': 'Four', 'provenance': [{'wikipedia_id': '37461', 'title': 'State of matter', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '37461', 'title': 'State of matter', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 572, 'bleu_score': 0.779237807298602, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 299249846392116197}, 'section': 'Section::::Abstract.'}]}]