Question: who played the lead actress role in movie mirror mirror
[{'answer': 'Lily Collins', 'provenance': [{'wikipedia_id': '33641119', 'title': 'Mirror Mirror (film)', 'start_paragraph_id': 2, 'start_character': 194, 'end_paragraph_id': 2, 'end_character': 206, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33641119', 'title': 'Mirror Mirror (film)', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 38, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17136180582360114739}, 'section': 'Section::::Cast.\n'}]}]