<｜begin▁of▁sentence｜>### Instruction:
As a networkx expert, I can understand your inquiry. Suppose you are a licensed professional counselor specializing in family therapy. You have a network of 500 families (nodes) connected based on relationships with a probability of 0.2 (edges). To gain insights into family dynamics, you wish to use the SnowBallSampler algorithm to select a focused group of 150 families for further analysis. After sampling, you want to determine if the relationships within the selected families form a chordal network structure.
### Response:
import networkx as nx
from littleballoffur import SnowBallSampler

G = nx.gnp_random_graph(n=500, p=0.2)

sampler = SnowBallSampler(150, 50, 42)

sampler_G = sampler.sample(G, start_node=0)

result = nx.is_chordal(sampler_G)

print(result)
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