Question: where do the tannins in wine come from
[{'answer': 'plant pigments', 'provenance': [{'wikipedia_id': '22476571', 'title': 'Wine color', 'start_paragraph_id': 4, 'start_character': 154, 'end_paragraph_id': 4, 'end_character': 168, 'bleu_score': 1.0, 'section': 'Section::::Color origins.\n'}]}, {'answer': 'phenolic compounds', 'provenance': [{'wikipedia_id': '22476571', 'title': 'Wine color', 'start_paragraph_id': 4, 'start_character': 178, 'end_paragraph_id': 4, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Color origins.\n'}]}, {'provenance': [{'wikipedia_id': '22476571', 'title': 'Wine color', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 584, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11702311148553464487}, 'section': 'Section::::Color origins.\n'}]}]