Question: who played the witch in american horror story roanoke
[{'answer': 'Lady Gaga', 'provenance': [{'wikipedia_id': '51720076', 'title': 'List of American Horror Story: Roanoke characters', 'start_paragraph_id': 2, 'start_character': 276, 'end_paragraph_id': 2, 'end_character': 285, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51720076', 'title': 'List of American Horror Story: Roanoke characters', 'start_paragraph_id': 50, 'start_character': 0, 'end_paragraph_id': 50, 'end_character': 1629, 'bleu_score': 0.9535867908908071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14583440359735059407}, 'section': 'Section::::Characters.:Supporting characters.\n'}]}]