Question: what was the name of bangladesh before independence
[{'answer': 'East Pakistan', 'provenance': [{'wikipedia_id': '40096', 'title': 'History of Bangladesh', 'start_paragraph_id': 6, 'start_character': 129, 'end_paragraph_id': 6, 'end_character': 142, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40096', 'title': 'History of Bangladesh', 'start_paragraph_id': 6, 'start_character': 70, 'end_paragraph_id': 6, 'end_character': 1059, 'bleu_score': 0.565720272106309, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13919495922441960636}, 'section': 'Section::::Abstract.'}]}]