Question: who won season four of rupauls drag race
[{'answer': 'Sharon Needles', 'provenance': [{'wikipedia_id': '33752131', 'title': "RuPaul's Drag Race (season 4)", 'start_paragraph_id': 4, 'start_character': 60, 'end_paragraph_id': 4, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]