Question: in attack on titan who is the female titan
[{'answer': 'Ymir Fritz', 'provenance': [{'wikipedia_id': '39395821', 'title': 'List of Attack on Titan characters', 'start_paragraph_id': 22, 'start_character': 68, 'end_paragraph_id': 22, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::Titans.\n'}]}]