<｜begin▁of▁sentence｜>### Instruction:
Given a graph read from 'graph_data.gml' and a VertexClustering instance (possibly obtained from some community detection algorithm), can you contract each cluster into a single vertex using the cluster_graph function from igraph's Cut? Assume you have a predefined VertexClustering instance.
### Response:
from igraph import Graph, VertexClustering

# Read the graph from a file
g = ig.read('graph_data.gml')

# Assuming 'clustering' is a VertexClustering instance obtained from some community detection method
# For illustration, we'll just create a dummy clustering
clustering = VertexClustering(g, membership=[0, 0, 1, 1, 2, 2])

# Contract each cluster into a single vertex
g_clustered = clustering.cluster_graph()

# Print the new graph
print(g_clustered)
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