<｜begin▁of▁sentence｜>### Instruction:
As a Smart Home Designer, you have been tasked with integrating a new smart security system into an existing smart home network. The security system is represented by a template graph that defines its connectivity structure. The existing smart home network is also represented by a graph, and you need to determine if the template graph of the security system is a subgraph of the existing network. Additionally, you are required to use the `subisomorphic_lad` function in `igraph` to verify this and provide the mapping of vertices if the template is indeed a subgraph of the network. The template graph and the existing smart home network have the following edges: (0,1), (0,2), (1,3), (2,3), (3,4) and (0,1), (1,2), respectively.
### Response:
import igraph as ig

# Create a graph and a template for subgraph
graph = ig.Graph(edges=[(0,1), (0,2), (1,3), (2,3), (3,4)])
template = ig.Graph(edges=[(0,1), (1,2)])

# Check if 'template' is a subgraph of 'graph'
is_subisomorphic, mapping = graph.subisomorphic_lad(template, return_mapping=True)

# Output the result
print('Is subisomorphic:', is_subisomorphic)
if is_subisomorphic:
    print('Mapping:', mapping)
<|EOT|>
