Question: what is the center of heredity in a cell
[{'answer': 'nucleus', 'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 0, 'start_character': 5, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'chromosome', 'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 2, 'start_character': 223, 'end_paragraph_id': 2, 'end_character': 233, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the nucleus', 'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 2, 'start_character': 441, 'end_paragraph_id': 2, 'end_character': 452, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Cell nuclei'}, {'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 1253, 'bleu_score': 0.9896637358043451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6141523126284182596}, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6141523126284182596}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 857, 'bleu_score': 0.8700989081318821, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6141523126284182596}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6235', 'title': 'Cell nucleus', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expressionthe nucleus is,', 'The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expressionthe nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nuclear matrix (which includes the nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.\rhighlight sentence(s) containing evidence, not only the answer', 'mes are structured in such a way to promote cell function. The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expressionthe nucleus is, therefore, the control center of the cell.']}}]}]