Question: prior to independence nigeria was ruled as a colony of
[{'answer': 'Britain', 'provenance': [{'wikipedia_id': '21384', 'title': 'History of Nigeria', 'start_paragraph_id': 94, 'start_character': 803, 'end_paragraph_id': 94, 'end_character': 810, 'bleu_score': 1.0, 'section': 'Section::::A British sphere of influence.\n'}]}, {'provenance': [{'wikipedia_id': '21384', 'title': 'History of Nigeria', 'start_paragraph_id': 94, 'start_character': 0, 'end_paragraph_id': 94, 'end_character': 882, 'bleu_score': 0.9853469949554711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13102056996314134748}, 'section': 'Section::::A British sphere of influence.\n'}]}]