Question: who plays the vice president on madam secretary
[{'answer': 'Alex Fernandez', 'provenance': [{'wikipedia_id': '42740374', 'title': 'Madam Secretary (TV series)', 'start_paragraph_id': 39, 'start_character': 12, 'end_paragraph_id': 39, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast and characters.:Recurring.\n'}]}, {'provenance': [{'wikipedia_id': '42740374', 'title': 'Madam Secretary (TV series)', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 94, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5715767475537825886}, 'section': 'Section::::Cast and characters.:Recurring.\n'}]}]