Question: list three types of evidence that indicate a chemical reaction
[{'answer': 'Change of odor', 'provenance': [{'wikipedia_id': '1326645', 'title': 'Chemical change', 'start_paragraph_id': 14, 'start_character': 12, 'end_paragraph_id': 14, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Evidence of a chemical change.\n'}]}, {'answer': 'Change of color', 'provenance': [{'wikipedia_id': '1326645', 'title': 'Chemical change', 'start_paragraph_id': 15, 'start_character': 12, 'end_paragraph_id': 15, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Evidence of a chemical change.\n'}]}, {'answer': 'Change in temperature or energy', 'provenance': [{'wikipedia_id': '1326645', 'title': 'Chemical change', 'start_paragraph_id': 16, 'start_character': 12, 'end_paragraph_id': 16, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Evidence of a chemical change.\n'}]}]