<｜begin▁of▁sentence｜>### Instruction:
As an agronomist managing a farm, you have a well-organized layout for your fields. Imagine that your fields A and C have irrigation systems connected to water sources B and D, respectively. To enhance your farm's productivity, could you help me store this field layout information in a file named 'field_layout.pickle'?
### Response:
from igraph import Graph

# Create a simple undirected graph with A connected to B and C connected to D
g = Graph.Formula('A--B, C--D')
# Save the graph to a pickle file
g.write_pickle('graph.pickle')
<|EOT|>
