Question: who discovered the process that allows for polymerase chain reaction
[{'answer': 'Kary Mullis', 'provenance': [{'wikipedia_id': '23647', 'title': 'Polymerase chain reaction', 'start_paragraph_id': 1, 'start_character': 493, 'end_paragraph_id': 1, 'end_character': 504, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23647', 'title': 'Polymerase chain reaction', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 464, 'bleu_score': 0.5529663893438741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16501567599556979207}, 'section': 'Section::::Abstract.'}]}]