Question: when did avenged sevenfold release their first album
[{'answer': '2001', 'provenance': [{'wikipedia_id': '1047970', 'title': 'Avenged Sevenfold', 'start_paragraph_id': 7, 'start_character': 648, 'end_paragraph_id': 7, 'end_character': 652, 'bleu_score': 1.0, 'section': 'Section::::History.:Formation and "Sounding the Seventh Trumpet" (1999–2002).\n'}]}]