Question: when did trinidad and tobago became one country
[{'answer': 'In 1889', 'provenance': [{'wikipedia_id': '30169', 'title': 'History of Trinidad and Tobago', 'start_paragraph_id': 1, 'start_character': 479, 'end_paragraph_id': 1, 'end_character': 486, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30169', 'title': 'History of Trinidad and Tobago', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 656, 'bleu_score': 0.9808590314834971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5054368318509744474}, 'section': 'Section::::Abstract.'}]}]