Question: who played commander shelby in star trek the next generation
[{'answer': 'Elizabeth Hannah Dennehy', 'provenance': [{'wikipedia_id': '11242965', 'title': 'Elizabeth Dennehy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11242965', 'title': 'Elizabeth Dennehy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 401, 'bleu_score': 0.8772212201770471, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6490343429635468624}, 'section': 'Section::::Abstract.'}]}]