Question: smallville when do lex and clark become enemies
[{'answer': 'Season three', 'provenance': [{'wikipedia_id': '17553330', 'title': 'Lex Luthor (Smallville)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Role in "Smallville".\n'}]}, {'provenance': [{'wikipedia_id': '17553330', 'title': 'Lex Luthor (Smallville)', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 654, 'bleu_score': 0.537624097581204, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3627564886179200669}, 'section': 'Section::::Role in "Smallville".\n'}]}]