Question: who are the two candidates running to represent us in the 18th congressional district of pa
[{'answer': 'Democrat Conor Lamb', 'provenance': [{'wikipedia_id': '55459674', 'title': "2018 Pennsylvania's 18th congressional district special election", 'start_paragraph_id': 1, 'start_character': 306, 'end_paragraph_id': 1, 'end_character': 325, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Republican Rick Saccone', 'provenance': [{'wikipedia_id': '55459674', 'title': "2018 Pennsylvania's 18th congressional district special election", 'start_paragraph_id': 1, 'start_character': 335, 'end_paragraph_id': 1, 'end_character': 358, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '55459674', 'title': "2018 Pennsylvania's 18th congressional district special election", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 430, 'bleu_score': 0.9094332554378121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6626783129289604144}, 'section': 'Section::::Abstract.'}]}]