Question: when does prentiss come back in season 7
[{'answer': 'In the season seven premiere', 'provenance': [{'wikipedia_id': '24977933', 'title': 'Emily Prentiss', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::On the job.:Returning to the BAU.\n'}]}, {'provenance': [{'wikipedia_id': '24977933', 'title': 'Emily Prentiss', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 890, 'bleu_score': 0.9776993279566061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8570437779638180088}, 'section': 'Section::::On the job.:Returning to the BAU.\n'}]}]