Question: who used viruses to determine that dna was the molecule of heredity
[{'answer': 'Alfred Hershey', 'provenance': [{'wikipedia_id': '13928', 'title': 'Hershey–Chase experiment', 'start_paragraph_id': 1, 'start_character': 80, 'end_paragraph_id': 1, 'end_character': 94, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Martha Chase', 'provenance': [{'wikipedia_id': '13928', 'title': 'Hershey–Chase experiment', 'start_paragraph_id': 1, 'start_character': 99, 'end_paragraph_id': 1, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13928', 'title': 'Hershey–Chase experiment', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 868, 'bleu_score': 0.829629950568284, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12387014989962053178}, 'section': 'Section::::Abstract.'}]}]