<｜begin▁of▁sentence｜>### Instruction:
Imagine you're guiding a group of curious students through an exhibit that features a network of connected historical figures, represented as a series of portraits in the gallery. The portraits are connected by lines that show relationships between these figures, similar to friends in a social network. In this exhibit, we have portraits labeled 'A', 'B', 'C', 'D', and 'E', with connections between them as follows: 'A' is connected to 'B', 'B' is connected to 'C', 'C' is connected to 'D', and 'D' is connected to 'E'. Can you figure out how many relationships are being depicted in this series of connections within our exhibit?
### Response:
import networkx as nx

# Create a graph
G = nx.Graph()
G.add_edges_from([('A', 'B'), ('B', 'C'), ('C', 'D'), ('D', 'E')])

# Get the number of edges
num_edges = G.number_of_edges()
print('The number of edges in the graph:', num_edges)
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