Disambiguation evidence for Port Townsend–Coupeville ferry via surface form

"Port Townsend–Coupeville ferry route"

Triples (1)

Triples where some other subject referred to this entity as "Port Townsend–Coupeville ferry route".

WSF → route →
"Port Townsend–Coupeville ferry route"
↳ resolves to Port Townsend–Coupeville ferry
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surface form: Washington State Ferries