Question: the nucleoli found within the nucleus are the sites of ____ synthesis.​
[{'answer': 'ribosome', 'provenance': [{'wikipedia_id': '21958', 'title': 'Nucleolus', 'start_paragraph_id': 1, 'start_character': 129, 'end_paragraph_id': 1, 'end_character': 137, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21958', 'title': 'Nucleolus', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 569, 'bleu_score': 0.8979859849228191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6977454816285413579}, 'section': 'Section::::Abstract.'}]}]