Because the word <em>gently</em><em> </em>describes the action verb <em>'</em><em>got</em><em> </em><em>up</em><em>'</em><em> </em>and because of its suffix -Ly. (g e n t <u>l</u><u> </u><u>y</u>)
Proper Noun: A name used for an individual person, place, or organization, spelled with initial capital letters, e.g.,Larry, Mexico, and Boston Red Sox.