Question: what is the fertile crescent also known as
[{'answer': 'cradle of civilization', 'provenance': [{'wikipedia_id': '39715', 'title': 'Fertile Crescent', 'start_paragraph_id': 2, 'start_character': 32, 'end_paragraph_id': 2, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]