<｜begin▁of▁sentence｜>### Instruction:
Given the Political blogs dataset, which can be read from a GML file named 'polblogs.gml', can you use the ANGEL community detection algorithm in CDlib with a minimum community size threshold of 0.25 to perform community detection? Can you also generate and print a JSON representation of the detected communities?
### Response:
import networkx as nx
from cdlib import algorithms

# Create a graph from the Political blogs dataset
G = nx.read_gml('polblogs.gml')

# Apply the ANGEL community detection algorithm with a minimum community size of 3 and a threshold of 0.25
communities = algorithms.angel(G, min_community_size=3, threshold=0.25)

# Export the discovered communities to JSON
communities_json = communities.to_json()

print(communities_json)
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