Question: who played b'elanna torres on star trek voyager
[{'answer': 'Roxann Dawson', 'provenance': [{'wikipedia_id': '455459', 'title': 'Roxann Dawson', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '455459', 'title': 'Roxann Dawson', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 0.7037873295747721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14644533600934704561}, 'section': 'Section::::Abstract.'}]}]