Question: when does brian come back to family guy
[{'answer': 'Christmas Guy', 'provenance': [{'wikipedia_id': '913782', 'title': 'Brian Griffin', 'start_paragraph_id': 4, 'start_character': 327, 'end_paragraph_id': 4, 'end_character': 340, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '913782', 'title': 'Brian Griffin', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 406, 'bleu_score': 0.9320708240526471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6096617491932848208}, 'section': 'Section::::Abstract.'}]}]