Question: who played the first captain on star trek
[{'answer': 'Anson Mount', 'provenance': [{'wikipedia_id': '100275', 'title': 'Christopher Pike (Star Trek)', 'start_paragraph_id': 1, 'start_character': 725, 'end_paragraph_id': 1, 'end_character': 736, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Bruce Greenwood', 'provenance': [{'wikipedia_id': '100275', 'title': 'Christopher Pike (Star Trek)', 'start_paragraph_id': 1, 'start_character': 457, 'end_paragraph_id': 1, 'end_character': 472, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Sean Kenney', 'provenance': [{'wikipedia_id': '100275', 'title': 'Christopher Pike (Star Trek)', 'start_paragraph_id': 1, 'start_character': 409, 'end_paragraph_id': 1, 'end_character': 420, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Jeffrey Hunter', 'provenance': [{'wikipedia_id': '100275', 'title': 'Christopher Pike (Star Trek)', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]