Question: branches of which tree appear on the un flag
[{'answer': 'olive branches', 'provenance': [{'wikipedia_id': '565612', 'title': 'Flag of the United Nations', 'start_paragraph_id': 4, 'start_character': 4, 'end_paragraph_id': 4, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Design.\n'}]}, {'provenance': [{'wikipedia_id': '565612', 'title': 'Flag of the United Nations', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 117, 'bleu_score': 0.910879922930628, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16763460122560259601}, 'section': 'Section::::Design.\n'}]}]