<｜begin▁of▁sentence｜>### Instruction:
As a landscape designer who crafts serene outdoor environments, imagine you're tasked with enhancing a public park nestled within a bustling city. You've meticulously mapped out the park's features and pathways, capturing the essence of its natural beauty in a digital blueprint stored as "graph20.gml".

Your client, the city's Parks and Recreation Department, seeks to understand the connectivity of the park's elements. They inquire about the prominence of a specific focal point: the central fountain represented by vertex 0 in your graph. In your exploration of this network, they ask if you could utilize a tool called Vertex.degree from igraph's API to ascertain the degree of connectivity of this central fountain. This information will be invaluable in shaping their vision for the park's layout and visitor flow.
### Response:
from igraph import Graph, Vertex

# Read the graph from GML file
g = Graph.Read_GML('graph20.gml')

# Get the Vertex object for vertex with id 0
vertex_zero = g.vs[0]

# Calculate the degree of the vertex
vertex_degree = vertex_zero.degree()

# Print the degree of the specified vertex
print('Degree of vertex 0:', vertex_degree)
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