e/Intermontane Trench

Information
has gloss	eng: The Intermontane Trench was an ancient oceanic trench during the Triassic time. The trench was probably 600 to 800 miles long running along the west-coast of North America. The ocean that the trench was located in was called the Slide Mountain Ocean.
lexicalization	eng: Intermontane Trench
instance of	c/Oceanic trenches of the Pacific Ocean