Question: rutherford scattering experiment is related to the size of
[{'answer': 'the nucleus', 'provenance': [{'wikipedia_id': '25985', 'title': 'Rutherford scattering', 'start_paragraph_id': 3, 'start_character': 298, 'end_paragraph_id': 3, 'end_character': 309, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25985', 'title': 'Rutherford scattering', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 939, 'bleu_score': 0.943362449295663, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2690315426651740073}, 'section': 'Section::::Abstract.'}]}]