Question: when did lebron win his first playoff series
[{'answer': '2006', 'provenance': [{'wikipedia_id': '240940', 'title': 'LeBron James', 'start_paragraph_id': 22, 'start_character': 7, 'end_paragraph_id': 22, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Professional career.:Cleveland Cavaliers.:2004–2008: Rise to superstardom.\n'}]}, {'provenance': [{'wikipedia_id': '240940', 'title': 'LeBron James', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 714, 'bleu_score': 0.9844346099707091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4636572864282677222}, 'section': 'Section::::Professional career.:Cleveland Cavaliers.:2004–2008: Rise to superstardom.\n'}]}]