<｜begin▁of▁sentence｜>### Instruction:
Given a zipped GraphML file 'compressed_graph.graphmlz' which contains one or more graphs, how can we read the first graph from this file using the igraph library?
### Response:
import igraph as ig

# Assume we have a zipped GraphML file named 'compressed_graph.graphmlz'
# Load the first graph within the GraphML file
graph = ig.Graph.Read_GraphMLz('compressed_graph.graphmlz', index=0)

# Print basic information about the graph
g_summary = graph.summary()
print(g_summary)
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