Question: name the person who designed the national flag of india
[{'answer': 'Pingali Venkayya', 'provenance': [{'wikipedia_id': '487864', 'title': 'Pingali Venkayya', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '487864', 'title': 'Pingali Venkayya', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 252, 'bleu_score': 0.8431834080868771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9837196268777516800}, 'section': 'Section::::Abstract.'}]}]