Question: who gets christina's seat on the board
[{'answer': 'Alex Karev', 'provenance': [{'wikipedia_id': '7687021', 'title': 'Cristina Yang', 'start_paragraph_id': 1, 'start_character': 627, 'end_paragraph_id': 1, 'end_character': 637, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7687021', 'title': 'Cristina Yang', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 250, 'bleu_score': 0.950578622812921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10547844062124035780}, 'section': 'Section::::Storylines and character.\n'}]}]