<｜begin▁of▁sentence｜>### Instruction:
Given a bipartite graph which you can read from graph_matching.gml, can you determine if vertex with id 3 is matched to another one after running maximum bipartite matching?
### Response:
import igraph as ig

# Read graph from file
g = ig.read('graph_matching.gml')

# Perform a bipartite matching
matching = g.maximum_bipartite_matching()

# Check if a vertex is matched
vertex_id = 3
is_matched = matching.is_matched(vertex_id)
print(f'Vertex {vertex_id} is matched: {is_matched}')
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