Question: who won the tour de france after lance armstrong
[{'answer': 'Óscar Pereiro', 'provenance': [{'wikipedia_id': '23972988', 'title': 'List of Tour de France general classification winners', 'start_paragraph_id': 11, 'start_character': 487, 'end_paragraph_id': 11, 'end_character': 500, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]