Question: how many dunk and egg stories are there
[{'answer': 'Three', 'provenance': [{'wikipedia_id': '30873440', 'title': 'Tales of Dunk and Egg', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 5, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30873440', 'title': 'Tales of Dunk and Egg', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 324, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17362253010410839728}, 'section': 'Section::::Abstract.'}]}]