Question: how many blocks did it take to build the great pyramid of khufu
[{'answer': '2.3 million', 'provenance': [{'wikipedia_id': '12224', 'title': 'Great Pyramid of Giza', 'start_paragraph_id': 10, 'start_character': 43, 'end_paragraph_id': 10, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Materials.\n'}]}, {'provenance': [{'wikipedia_id': '12224', 'title': 'Great Pyramid of Giza', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 851, 'bleu_score': 0.808545886948786, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13321682019434751603}, 'section': 'Section::::Materials.\n'}]}]