Question: who plays spencer's mother on pretty little liars
[{'answer': 'Lesley Fera', 'provenance': [{'wikipedia_id': '27998609', 'title': 'List of Pretty Little Liars characters', 'start_paragraph_id': 47, 'start_character': 31, 'end_paragraph_id': 47, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Acquaintances of Spencer Hastings.:Family.\n'}]}, {'provenance': [{'wikipedia_id': '27998609', 'title': 'List of Pretty Little Liars characters', 'start_paragraph_id': 47, 'start_character': 0, 'end_paragraph_id': 47, 'end_character': 493, 'bleu_score': 0.9346183847893801, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8349056568506827931}, 'section': 'Section::::Acquaintances of Spencer Hastings.:Family.\n'}]}]