Question: when did the first white man came to nigeria
[{'answer': 'about 1485', 'provenance': [{'wikipedia_id': '25649488', 'title': 'Kingdom of Benin', 'start_paragraph_id': 20, 'start_character': 101, 'end_paragraph_id': 20, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::European contact.\n'}]}, {'provenance': [{'wikipedia_id': '25649488', 'title': 'Kingdom of Benin', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 512, 'bleu_score': 0.819334769252343, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15014197215219153541}, 'section': 'Section::::European contact.\n'}]}]