Question: when is heat released in a chemical reaction
[{'answer': 'exothermic reaction', 'provenance': [{'wikipedia_id': '536063', 'title': 'Exothermic reaction', 'start_paragraph_id': 1, 'start_character': 3, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '536063', 'title': 'Exothermic reaction', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 191, 'bleu_score': 0.83851300471302, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9892082310413632462}, 'section': 'Section::::Overview.\n'}]}]