Question: who plays april kepner in grey's anatomy
[{'answer': 'Sarah White Drew', 'provenance': [{'wikipedia_id': '3569434', 'title': 'Sarah Drew', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3569434', 'title': 'Sarah Drew', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 224, 'bleu_score': 0.7492504887494621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17180090124929440845}, 'section': 'Section::::Abstract.'}]}]