Question: when did st vincent and the grenadines became independent
[{'answer': '1979', 'provenance': [{'wikipedia_id': '27229', 'title': 'History of Saint Vincent and the Grenadines', 'start_paragraph_id': 19, 'start_character': 120, 'end_paragraph_id': 19, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::French and British colonisation and the Carib Wars.\n'}]}]