Question: a process in which at least one new substance is produced as a result of chemical change
[{'answer': 'chemical reaction', 'provenance': [{'wikipedia_id': '9722260', 'title': 'Chemical substance', 'start_paragraph_id': 3, 'start_character': 222, 'end_paragraph_id': 3, 'end_character': 239, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9722260', 'title': 'Chemical substance', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 277, 'bleu_score': 0.9560167778278961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11894800158712152938}, 'section': 'Section::::Chemical compounds.\n'}]}]