Question: who does don draper marry the second time
[{'answer': 'Betty Hofstadt', 'provenance': [{'wikipedia_id': '13826091', 'title': 'Don Draper', 'start_paragraph_id': 21, 'start_character': 32, 'end_paragraph_id': 21, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Don Draper and women.\n'}]}]