<｜begin▁of▁sentence｜>### Instruction:
Given the Political books graph which you can read from a GML file named polbooks.gml, can you use the PercoMVC function in cdlib to perform community detection? And can you convert the detected community structure into a JSON format?
### Response:
from cdlib import algorithms
import networkx as nx

# Load the political books graph
G = nx.read_gml('polbooks.gml')

# Run the PercoMVC community detection algorithm
coms = algorithms.percomvc(G)

# Convert the community structure to JSON
coms_json = coms.to_json()

# Print the json
print(coms_json)
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