Question: Matthew Dryer has performed research on which Native American language?
Sentence (from "Kutenai language"): The Kutenai language ( ), also Kootenai, Kootenay and Ktunaxa, is named after and is spoken by some of the Kutenai people Native American/First Nations, indigenous to the area of North America that is now Montana and Idaho, United States, and British Columbia, Canada.
Relevant evidence: Yes