Question: who are the two candidates running for senate in tx
[{'answer': 'Ted Cruz', 'provenance': [{'wikipedia_id': '51043442', 'title': '2018 United States Senate election in Texas', 'start_paragraph_id': 1, 'start_character': 236, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "Beto O'Rourke", 'provenance': [{'wikipedia_id': '51043442', 'title': '2018 United States Senate election in Texas', 'start_paragraph_id': 1, 'start_character': 324, 'end_paragraph_id': 1, 'end_character': 337, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]