Question: who negotiated the release of the hostages from iran
[{'answer': 'Mohammed Benyahia', 'provenance': [{'wikipedia_id': '40646666', 'title': 'Iran hostage crisis negotiations', 'start_paragraph_id': 13, 'start_character': 510, 'end_paragraph_id': 13, 'end_character': 527, 'bleu_score': 1.0, 'section': 'Section::::Negotiations.:November.\n'}]}, {'answer': 'Warren Christopher', 'provenance': [{'wikipedia_id': '40646666', 'title': 'Iran hostage crisis negotiations', 'start_paragraph_id': 12, 'start_character': 147, 'end_paragraph_id': 12, 'end_character': 165, 'bleu_score': 1.0, 'section': 'Section::::Negotiations.:November.\n'}]}, {'answer': 'Abdulkarim Ghuraib', 'provenance': [{'wikipedia_id': '40646666', 'title': 'Iran hostage crisis negotiations', 'start_paragraph_id': 13, 'start_character': 662, 'end_paragraph_id': 13, 'end_character': 680, 'bleu_score': 1.0, 'section': 'Section::::Negotiations.:November.\n'}]}, {'provenance': [{'wikipedia_id': '40646666', 'title': 'Iran hostage crisis negotiations', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 957, 'bleu_score': 0.9480372296613011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13419863709554611240}, 'section': 'Section::::Negotiations.:November.\n'}]}]