Question: who is the protagonist in the last action hero film
[{'answer': 'Jack Slater', 'provenance': [{'wikipedia_id': '675832', 'title': 'Last Action Hero', 'start_paragraph_id': 1, 'start_character': 285, 'end_paragraph_id': 1, 'end_character': 296, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]