Question: when did singapore became part of the british empire
[{'answer': '7 June 1823', 'provenance': [{'wikipedia_id': '5275459', 'title': 'History of Singapore', 'start_paragraph_id': 21, 'start_character': 3, 'end_paragraph_id': 21, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::1819–1942: Colonial Singapore.:1819–1826: Early growth.\n'}]}, {'provenance': [{'wikipedia_id': '5275459', 'title': 'History of Singapore', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 783, 'bleu_score': 0.9844346099707091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15365240703890997233}, 'section': 'Section::::1819–1942: Colonial Singapore.:1819–1826: Early growth.\n'}]}]