<｜begin▁of▁sentence｜>### Instruction:
In evaluating the robustness of a newly mapped ecological network within our conservation area, represented by a habitat connectivity map (graph) in our GML file "EcoNetwork.gml," we have an intriguing question about its structure. The habitat connections are defined by corridors (edges) between critical areas (nodes), and we've noted the following links: [(0, 1), (0, 2), (1, 2), (1, 3), (1, 4), (4, 5)]. To better understand this ecosystem's resilience, could you tell us if this graph is devoid of asteroidal triples (AT-free)? Understanding this characteristic could give us insights into the stability and vulnerability of our ecological network, which is essential for ensuring effective conservation strategies.
### Response:
import networkx as nx

# Create a graph
G = nx.Graph()
G.add_edges_from([(0,1), (0,2), (1,2), (1,3), (1,4), (4,5)])

# Check if the graph is AT-free
is_atfree = nx.is_at_free(G)
print(is_atfree)
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