<｜begin▁of▁sentence｜>### Instruction:
Imagine you're plotting a new garden path that must pass sequentially through a series of key checkpoints labeled A, B, C, and D, akin to distinct areas within your garden where specific plants or garden features are located. You've outlined the path like a map, with connections akin to garden walkways between each checkpoint: the path goes from 'A' to 'B', then 'B' to 'C', and finally 'C' to 'D'. As a seasoned horticulturist, you appreciate the importance of verifying the practicality of this path before you start planting along it. Could you employ the analytical methods of NetworkX to confirm whether your planned garden path from 'A' through 'D' is indeed a feasible route, given the current layout of your garden's checkpoints and the connections between them?
### Response:
import networkx as nx

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

# Define a path
path = ['A', 'B', 'C', 'D']

# Check if the defined path is valid
is_valid = nx.is_path(G, path)
print('Is the path valid?', is_valid)
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