Question: types of neuroglia in the central nervous system
[{'answer': 'oligodendrocytes', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 295, 'end_paragraph_id': 1, 'end_character': 311, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'astrocytes', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 313, 'end_paragraph_id': 1, 'end_character': 323, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'ependymal cells', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 325, 'end_paragraph_id': 1, 'end_character': 340, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'microglia', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 346, 'end_paragraph_id': 1, 'end_character': 355, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 447, 'bleu_score': 0.6198444655344161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5077161309211674465}, 'section': 'Section::::Abstract.'}]}]