Question: who is the longest reigning raw women's champion
[{'answer': 'Charlotte', 'provenance': [{'wikipedia_id': '50039307', 'title': "WWE Raw Women's Championship", 'start_paragraph_id': 2, 'start_character': 225, 'end_paragraph_id': 2, 'end_character': 234, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]