Question: when does olivia come back to her universe
[{'answer': 'Entrada', 'provenance': [{'wikipedia_id': '27905664', 'title': 'Fringe (season 3)', 'start_paragraph_id': 2, 'start_character': 396, 'end_paragraph_id': 2, 'end_character': 403, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]