Question: the part of the cytoskeleton made from the protein actin is called
[{'answer': 'microfilament', 'provenance': [{'wikipedia_id': '156970', 'title': 'Cytoskeleton', 'start_paragraph_id': 4, 'start_character': 269, 'end_paragraph_id': 4, 'end_character': 282, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Microfilaments', 'provenance': [{'wikipedia_id': '156970', 'title': 'Cytoskeleton', 'start_paragraph_id': 4, 'start_character': 284, 'end_paragraph_id': 4, 'end_character': 298, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '156970', 'title': 'Cytoskeleton', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1023, 'bleu_score': 0.8474640665984041, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5026571932973357541}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '156970', 'title': 'Cytoskeleton', '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': 5026571932973357541}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '438944', 'title': 'Actin', 'section': 'Section::::Structure.\n', 'start_paragraph_id': 15, 'end_paragraph_id': 15, 'meta': {'evidence_span': ['Two parallel F-actin strands must rotate 166 degrees to lie correctly on top of each other. This creates the double helix structure of the microfilaments found in the cytoskeleton. Microfilaments measure approximately 7 nm in diameter with the helix repeating every 37\xa0nm. Each molecule of actin is bound to a molecule of adenosine triphosphate (ATP) or adenosine diphosphate (ADP) that is associated with a Mg cation. The most commonly found forms of actin, compared to all the possible combinations, are ATP-G-Actin and ADP-F-actin.', 'Two parallel F-actin strands must rotate 166 degrees to lie correctly on top of each other. This creates the double helix structure of the microfilaments found in the cytoskeleton. Microfilaments measure approximately 7 nm in diameter with the helix repeating every 37\xa0nm.']}}]}]