Question: what do glial cells do in the brain
[{'answer': 'maintain homeostasis', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'form myelin', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 183, 'end_paragraph_id': 1, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'insulate one neuron from another', 'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 582, 'end_paragraph_id': 1, 'end_character': 614, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'provide support and protection for neurons'}, {'answer': 'play a role in neurotransmission and synaptic connections , and in physiological processes like breathing'}, {'answer': 'supply nutrients and oxygen to neurons'}, {'answer': 'destroy pathogens and remove dead neurons'}, {'answer': 'surround neurons and hold them in place'}, {'provenance': [{'wikipedia_id': '518989', 'title': 'Glia', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 780, 'bleu_score': 0.9342192067910841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18303799524745083260}, 'section': 'Section::::Abstract.'}]}]