Given the task definition and input, reply with output. In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.

passage: The Silence of the Lambs is a novel by Thomas Harris. First published in 1988, it is the sequel to Harris' 1981 novel Red Dragon. Both novels feature the cannibalistic serial killer Dr. Hannibal Lecter, this time pitted against FBI Special Agent Clarice Starling. Its film adaptation directed by Jonathan Demme was released in 1991 to box office success and critical acclaim.
question: was silence of the lambs based on a book?
Yes