Question: what is meant by the term differentiation of cells
[{'answer': 'Cell potency', 'provenance': [{'wikipedia_id': '26982208', 'title': 'Cell potency', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26982208', 'title': 'Cell potency', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 323, 'bleu_score': 0.751967417799963, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13916133277541684548}, 'section': 'Section::::Abstract.'}]}]