Question: where was the first petro-chemical industry established in nigeria
[{'answer': '1907'}, {'provenance': [{'wikipedia_id': '3542988', 'title': 'Petroleum industry in Nigeria', 'start_paragraph_id': 3, 'start_character': 129, 'end_paragraph_id': 3, 'end_character': 2099, 'bleu_score': 0.8903101827720561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4298572236253540715}, 'section': 'Section::::History of oil exploration.\n'}]}]