Question: who played betsy in the white cliffs of dover
[{'answer': 'Elizabeth Taylor', 'provenance': [{'wikipedia_id': '4143564', 'title': 'The White Cliffs of Dover (film)', 'start_paragraph_id': 7, 'start_character': 278, 'end_paragraph_id': 7, 'end_character': 294, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '4143564', 'title': 'The White Cliffs of Dover (film)', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 472, 'bleu_score': 0.974188104609039, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3153618331204317162}, 'section': 'Section::::Plot.\n'}]}]