Question: who played mark twain on star trek next generation
[{'answer': 'Jerry Hardin'}, {'provenance': [{'wikipedia_id': '1803735', 'title': "Time's Arrow (Star Trek: The Next Generation)", 'start_paragraph_id': 6, 'start_character': 361, 'end_paragraph_id': 6, 'end_character': 803, 'bleu_score': 0.832698898975138, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 723836285710679808}, 'section': 'Section::::Plot.:Part 1.\n'}]}]