<｜begin▁of▁sentence｜>### Instruction:
Given an undirected cycle graph consisting of three nodes (A, B, C), can you save this graph into a GraphML file named example_graph.graphml?
### Response:
from igraph import Graph

# Create an example graph
g = Graph.Formula('A--B--C--A')

# Write the graph to a GraphML file
g.write_graphml('example_graph.graphml')
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