Question: what are the three witches in macbeth called
[{'answer': 'Weird Sisters or Wayward Sisters', 'provenance': [{'wikipedia_id': '15903914', 'title': 'Three Witches', 'start_paragraph_id': 1, 'start_character': 37, 'end_paragraph_id': 1, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15903914', 'title': 'Three Witches', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 905, 'bleu_score': 0.896530420440066, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 410148058234653227}, 'section': 'Section::::Abstract.'}]}]