Question: who discovered protons and neutrons in the nucleus
[{'answer': 'Ernest Rutherford', 'provenance': [{'wikipedia_id': '19916559', 'title': 'Atomic nucleus', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 146, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19916559', 'title': 'Atomic nucleus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 659, 'bleu_score': 0.7839387755040771, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4645554471951315163}, 'section': 'Section::::Abstract.'}]}]