Question: who is working for a in pretty little liars
[{'answer': 'Melissa', 'provenance': [{'wikipedia_id': '38061693', 'title': 'A (Pretty Little Liars)', 'start_paragraph_id': 19, 'start_character': 2144, 'end_paragraph_id': 19, 'end_character': 2151, 'bleu_score': 1.0, 'section': 'Section::::Television storylines.:Original "A".\n'}]}, {'provenance': [{'wikipedia_id': '38061693', 'title': 'A (Pretty Little Liars)', 'start_paragraph_id': 38, 'start_character': 0, 'end_paragraph_id': 38, 'end_character': 689, 'bleu_score': 0.9719868132454771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9056893479827209566}, 'section': 'Section::::The A-Team.:Members.:Melissa Hastings.\n'}]}]