Question: why the colour of school buses is yellow
[{'answer': 'it attracts attention', 'provenance': [{'wikipedia_id': '1544243', 'title': 'School bus yellow', 'start_paragraph_id': 2, 'start_character': 29, 'end_paragraph_id': 2, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'is noticed quickly in peripheral vision , faster than any other color'}, {'provenance': [{'wikipedia_id': '1544243', 'title': 'School bus yellow', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 245, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14260999237594956973}, 'section': 'Section::::Abstract.'}]}]