Question: who is the subject of a documentary a billion dreams
[{'answer': 'Indian cricketer Sachin Tendulkar', 'provenance': [{'wikipedia_id': '50125865', 'title': 'Sachin: A Billion Dreams', 'start_paragraph_id': 1, 'start_character': 228, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50125865', 'title': 'Sachin: A Billion Dreams', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 462, 'bleu_score': 0.7434258162066181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8237549744478799655}, 'section': 'Section::::Abstract.'}]}]