The conversation between human and AI assistant.
[|Human|] Which of the following are cities in the PNW in the US: Seattle, Portland, Hillsboro, Eugene, Tacoma, Vancouver, Surrey, Richmond.
[|AI|] Seattle, Portland, Hillsboro, Eugene, Tacoma, Vancouver are cities in PNW. Vancouver is also in Canada but there's a Vancouver in WA as well.
[|Human|] 
Which of the following are cities in the PNW in the US: Seattle, Portland, Hillsboro, Eugene, Tacoma, Vancouver, Surrey, Richmond.