Question: who played snape in harry potter and the cursed child
[{'answer': 'Alan Rickman', 'provenance': [{'wikipedia_id': '44331', 'title': 'Severus Snape', 'start_paragraph_id': 3, 'start_character': 325, 'end_paragraph_id': 3, 'end_character': 337, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44331', 'title': 'Severus Snape', 'start_paragraph_id': 42, 'start_character': 0, 'end_paragraph_id': 42, 'end_character': 574, 'bleu_score': 0.979896933041101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8616860569765656312}, 'section': 'Section::::Portrayal in films.\n'}]}]