Knoll in a sentence as a noun

Also, 9/11 was an inside job and there was a second shooter on the grassy knoll.

"More reliable backup shooter on the grassy knoll"?

I'd also like to see labeled in the diorama the location of the infamous "grassy knoll" and the location Zapruder was filming from.

Knoll definitions

noun

a small natural hill

See also: mound hillock hummock hammock