<｜begin▁of▁sentence｜>### Instruction:
Given the Books about US politics Graph which you can read from a GML file named polbooks.gml, can you use the Divide and Conquer Strategy (dcs) function in cdlib to perform community detection? And can you provide a JSON representation of the discovered communities?
### Response:
import networkx as nx
from cdlib import algorithms

# Read the graph from GML file
G = nx.read_gml('polbooks.gml')

# Apply Divide and Conquer Strategy for community detection
coms = algorithms.dcs(G)

# Convert the NodeClustering object to JSON
coms_json = coms.to_json()

# Print the JSON representation of the discovered communities
print(coms_json)
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