Question: who votes in pa special election march 13
[{'answer': "Pennsylvania 's 18th congressional district", 'provenance': [{'wikipedia_id': '55459674', 'title': "2018 Pennsylvania's 18th congressional district special election", 'start_paragraph_id': 5, 'start_character': 273, 'end_paragraph_id': 5, 'end_character': 320, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'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': 0.9712154609069981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12769343819965558095}, 'section': 'Section::::Abstract.'}]}]