Question: who is pretending to be a in pretty little liars
[{'answer': 'Shana', 'provenance': [{'wikipedia_id': '38061693', 'title': 'A (Pretty Little Liars)', 'start_paragraph_id': 21, 'start_character': 1321, 'end_paragraph_id': 21, 'end_character': 1326, 'bleu_score': 1.0, 'section': 'Section::::Television storylines.:Big "A".\n'}]}, {'provenance': [{'wikipedia_id': '38061693', 'title': 'A (Pretty Little Liars)', 'start_paragraph_id': 55, 'start_character': 0, 'end_paragraph_id': 55, 'end_character': 510, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6936485254110721200}, 'section': 'Section::::Other "A\'s".:Shana Fring.\n'}]}]