Disambiguation evidence for traveling salesman problem via surface form

"traveling salesman problem (optimization version) is NP-hard"

Triples (1)

Triples where some other subject referred to this entity as "traveling salesman problem (optimization version) is NP-hard".

NP-hardness → exampleProblem →
"traveling salesman problem (optimization version) is NP-hard"
↳ resolves to traveling salesman problem
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