Read the following paragraph and identify the types of clauses used. Answer for the bolded portion only.

"A story I like very much is “The Legend of Sleepy Hollow.” This famous
tale was first published in 1820. Washington Irving wrote this tale, and it quickly
established itself as a classic. It features Ichabod Crane, who is a naïve schoolmaster. Ichabod loves Katrina, but he has a rival who loves her too. As soon as Ichabod
appears on the scene, Brom begins a series of practical jokes. After the jokes have
gone on for some time, Katrina invites guests to a quilting party. The guests tell
ghost stories, and everyone becomes nervous. Brom tells of a headless horseman who haunts the area. Ichabod doubts that the story is true."

**After the jokes have gone on for some time**, Katrina invites guests to a quilting party.

**The guests tell ghost stories**, and everyone becomes nervous.

Brom tells of a headless horseman **who haunts the area.**

Ichabod doubts **that the story is true.**