Question: what is stuart's last name on big bang theory
[{'answer': 'Stuart Bloom', 'provenance': [{'wikipedia_id': '16709386', 'title': 'List of The Big Bang Theory and Young Sheldon characters', 'start_paragraph_id': 3, 'start_character': 305, 'end_paragraph_id': 3, 'end_character': 317, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16709386', 'title': 'List of The Big Bang Theory and Young Sheldon characters', 'start_paragraph_id': 3, 'start_character': 281, 'end_paragraph_id': 3, 'end_character': 735, 'bleu_score': 0.5522470023781231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6769927689006057583}, 'section': 'Section::::Abstract.'}]}]