<｜begin▁of▁sentence｜>### Instruction:
As an Emergency Medical Technician (EMT), you may encounter situations where you need to verify that specific pairs of patients are reciprocally connected in terms of medical history or care protocols. NetworkX, a Python library for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks, offers a function known as "is_mutual" to aid in checking if certain patients have mutual connections. This can be analogous to verifying if specific edge pairs have their mutual/opposite pairs in a directed graph.
### Response:
from igraph import Graph

# Create a directed graph with edges
edges = [(0, 1), (1, 0), (2, 3)]
g = Graph(edges, directed=True)

# Check if the edge (0, 1) has a mutual/ opposite pair
is_mutual = g.is_mutual((0, 1))
print('Edge (0, 1) is mutual:', is_mutual)

# Check if the edge (2, 3) has a mutual/ opposite pair
is_mutual = g.is_mutual((2, 3))
print('Edge (2, 3) is mutual:', is_mutual)
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