Question: who is petra's mother in jane the virgin
[{'answer': 'Magda', 'provenance': [{'wikipedia_id': '56435471', 'title': 'List of Jane the Virgin characters', 'start_paragraph_id': 22, 'start_character': 66, 'end_paragraph_id': 22, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Alba Villanueva.\n'}]}]