Question: when does nikolas cassadine return to general hospital
[{'answer': 'April 21 , 2003', 'provenance': [{'wikipedia_id': '4515869', 'title': 'Nikolas Cassadine', 'start_paragraph_id': 1, 'start_character': 368, 'end_paragraph_id': 1, 'end_character': 383, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4515869', 'title': 'Nikolas Cassadine', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1065, 'bleu_score': 0.9890406822930451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11942007152611915003}, 'section': 'Section::::Abstract.'}]}]