Question: who led the first coup d'etat in nigeria
[{'answer': 'Kaduna Nzeogwu', 'provenance': [{'wikipedia_id': '39617752', 'title': "1966 Nigerian coup d'état", 'start_paragraph_id': 1, 'start_character': 104, 'end_paragraph_id': 1, 'end_character': 118, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Emmanuel Ifeajuna', 'provenance': [{'wikipedia_id': '39617752', 'title': "1966 Nigerian coup d'état", 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39617752', 'title': "1966 Nigerian coup d'état", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 712, 'bleu_score': 0.9436101005281851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2300047722636857290}, 'section': 'Section::::Abstract.'}]}]