Question: who plays charles dilaurentis on pretty little liars
[{'answer': 'Vanessa Ray', 'provenance': [{'wikipedia_id': '42892842', 'title': 'Charlotte Drake', 'start_paragraph_id': 1, 'start_character': 261, 'end_paragraph_id': 1, 'end_character': 272, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]