Question: when does frank become president in house of cards
[{'answer': 'Chapter 26', 'provenance': [{'wikipedia_id': '40007287', 'title': 'Frank Underwood (House of Cards)', 'start_paragraph_id': 49, 'start_character': 288, 'end_paragraph_id': 49, 'end_character': 298, 'bleu_score': 1.0, 'section': 'Section::::Fictional character biography.:Season 2.\n'}]}, {'provenance': [{'wikipedia_id': '40007287', 'title': 'Frank Underwood (House of Cards)', 'start_paragraph_id': 49, 'start_character': 0, 'end_paragraph_id': 49, 'end_character': 377, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15733944580345908700}, 'section': 'Section::::Fictional character biography.:Season 2.\n'}]}]