Question: a solid that forms from a solution during a chemical reaction
[{'answer': "' precipitate '", 'provenance': [{'wikipedia_id': '286262', 'title': 'Precipitation (chemistry)', 'start_paragraph_id': 1, 'start_character': 136, 'end_paragraph_id': 1, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '286262', 'title': 'Precipitation (chemistry)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 855, 'bleu_score': 0.9850176677359421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1776424779289249265}, 'section': 'Section::::Abstract.'}]}]