<｜begin▁of▁sentence｜>### Instruction:
As a fire investigator, you're called to assess a recent incident at a commercial building. The structure's blueprint reveals a network of interconnected rooms represented as a graph. The edges denote passages between rooms, and the nodes signify the rooms themselves. Your task is to determine the overall vulnerability of the building's layout to potential obstructions or damages to key areas.

To accomplish this, you turn to a specialized tool called the "Connectivity Analyzer" provided by the SafetyInspect API. Using the graph data extracted from the blueprint, you input the edge set [(0, 1), (1, 2), (2, 3), (3, 0), (1, 3)] into the tool. Then, employing its vertex_connectivity function, you aim to calculate the building's overall vertex connectivity. This metric will help you gauge how resilient the structure is against potential blockages or collapses in critical pathways between rooms.
### Response:
import igraph as ig

# Create an igraph graph
edges = [(0, 1), (1, 2), (2, 3), (3, 0), (1, 3)]
g = ig.Graph(edges=edges)

# Calculate the overall vertex connectivity of the graph
g_v_connectivity = g.vertex_connectivity()

# Print the vertex connectivity
g_v_connectivity
<|EOT|>
