Question: who is the winner of bigg boss 4
[{'answer': 'Shweta Tiwari', 'provenance': [{'wikipedia_id': '26653049', 'title': 'Bigg Boss (Hindi season 4)', 'start_paragraph_id': 2, 'start_character': 542, 'end_paragraph_id': 2, 'end_character': 555, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26653049', 'title': 'Bigg Boss (Hindi season 4)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 791, 'bleu_score': 0.9850176677359421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2326822432165776790}, 'section': 'Section::::Abstract.'}]}]