Question: Which state of Canada is connected to the most populous city in the US state of Michigan and the seat of Wayne County, by means of the Michigan Central Railway Tunnel, a railroad tunnel under the Detroit River?
Sentence (from "Michigan Central Railway Tunnel"): On the Detroit side, the area around the tunnel is off limits to the general public and is routinely patrolled by officers and agents of the US Department of Homeland Security, Canadian Pacific Police Service, CN Police, Detroit Police Department, and the security elements of the bridge company.
Relevant evidence: No