Question: what year did the song blue come out
[{'answer': '1999', 'provenance': [{'wikipedia_id': '2560084', 'title': 'Blue (Da Ba Dee)', 'start_paragraph_id': 12, 'start_character': 156, 'end_paragraph_id': 12, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Chart performance.\n'}]}]