Question: when does diane leaves frasier at the altar
[{'answer': 'start of the fourth season', 'provenance': [{'wikipedia_id': '36204840', 'title': 'Diane Chambers', 'start_paragraph_id': 5, 'start_character': 486, 'end_paragraph_id': 5, 'end_character': 512, 'bleu_score': 1.0, 'section': 'Section::::Role.\n'}]}, {'provenance': [{'wikipedia_id': '36204840', 'title': 'Diane Chambers', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 1445, 'bleu_score': 0.9609811637875171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8739855980915296120}, 'section': 'Section::::Role.\n'}]}]