Question: when did the highwaymen perform at the nassau coliseum
[{'answer': '1990', 'provenance': [{'wikipedia_id': '4541136', 'title': 'The Highwaymen (country supergroup)', 'start_paragraph_id': 9, 'start_character': 3, 'end_paragraph_id': 9, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Albums.:"Highwayman 2".\n'}]}, {'provenance': [{'wikipedia_id': '4541136', 'title': 'The Highwaymen (country supergroup)', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 94, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12308557958964595373}, 'section': 'Section::::Videography.:Video albums.\n'}]}]