Question: pretty little liars tv show who is a
[{'answer': 'Mona Vanderwaal', 'provenance': [{'wikipedia_id': '25857222', 'title': 'Pretty Little Liars', 'start_paragraph_id': 1, 'start_character': 717, 'end_paragraph_id': 1, 'end_character': 732, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25857222', 'title': 'Pretty Little Liars', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 371, 'bleu_score': 0.9269422159482571, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5987682608361919076}, 'section': 'Section::::Cast and characters.\n'}]}]