Question: what team was lebron james on before lakers
[{'answer': 'Cleveland Cavaliers', 'provenance': [{'wikipedia_id': '240940', 'title': 'LeBron James', 'start_paragraph_id': 2, 'start_character': 199, 'end_paragraph_id': 2, 'end_character': 218, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]