Question: what color is a negative benedict's test
[{'answer': 'blue', 'provenance': [{'wikipedia_id': '184383', 'title': "Benedict's reagent", 'start_paragraph_id': 1, 'start_character': 508, 'end_paragraph_id': 1, 'end_character': 512, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '184383', 'title': "Benedict's reagent", 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 478, 'bleu_score': 0.706708819003085, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16451457454067145320}, 'section': "Section::::Benedict's test for organic analysis.\n"}]}]