<｜begin▁of▁sentence｜>### Instruction:
Given the Power grid network which you can read from a GML file named power.gml, can you use the DEMON algorithm in cdlib to perform overlapping community detection with a merging threshold of 0.25 and minimum community size of 3?
### Response:
import networkx as nx
from cdlib import algorithms

# Read the power grid graph
G = nx.read_gml('power.gml')

# Apply DEMON community detection algorithm with epsilon=0.25 and minimum community size of 3
communities = algorithms.demon(G, epsilon=0.25, min_com_size=3)

# Output the community detection result
print(communities)
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