Question: when did lebron go to his first finals
[{'answer': '2007', 'provenance': [{'wikipedia_id': '240940', 'title': 'LeBron James', 'start_paragraph_id': 24, 'start_character': 19, 'end_paragraph_id': 24, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Professional career.:Cleveland Cavaliers.:2004–2008: Rise to superstardom.\n'}]}]