Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Context: The muscular system consists of all the muscles in the body. This is the body system that allows us to move. You also depend on many muscles to keep you alive. Your heart, which is mostly muscle, pumps blood around your body. Each muscle in the body is made up of cells called muscle fibers. Muscle fibers are long, thin cells that can do something that other cells cannot dothey are able to get shorter. Shortening of muscle fibers is called contraction. Muscle fibers can contract because they are made of proteins, called actin and myosin, that form long filaments (or fibers). When muscles contract, these protein filaments slide or glide past one another, shortening the length of the cell. When your muscles relax, the length extends back to the previous position. Nearly all movement in the body is the result of muscle contraction. You can control some muscle movements. However, certain muscle movements happen without you thinking about them. Muscles that are under your conscious control are called voluntary muscles. Muscles that are not under your conscious control are called involuntary muscles. Muscle tissue is one of the four types of tissue found in animals. There are three different types of muscle in the body ( Figure 1.1): 1. Skeletal muscle is made up of voluntary muscles, usually attached to the skeleton. Skeletal muscles move the body. They can also contract involuntarily by reflexes. For example, you can choose to move your arm, but your arm would move automatically if you were to burn your finger on a stove top. This voluntary contraction begins with a thought process. A signal from your brain tells your muscles to contract or relax. Quickly contract and relax the muscles in your fingers a few times. Think about how quickly these signals must travel throughout your body to make this happen. 2. Smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. These muscles push materials like food or blood through organs. Unlike skeletal muscle, smooth muscle can never be under your control. 3. Cardiac muscle is also an involuntary muscle, found only in the heart. The cardiac muscle fibers all contract together, generating enough force to push blood throughout the body. What would happen if this muscle was under conscious or voluntary control? There are three types of muscles in the body: cardiac, skeletal, and smooth.
Question: what muscle pushes food through your intestines?
smooth muscle

Context: Hans Ernst von Kottwitz (1 September 1757 -- 13 May 1843) was a German Pietist and philanthropist.
Question: What was Hans Ernst von Kottwitz's nationality?
german

Context: Wayne's World 2, while retaining Wayne Campbell, Garth Algar, and Wayne's girlfriend Cassandra Wong, has a much more serious tone and outcome than the first Wayne's World movie. The movie opens with Wayne explaining that the course of the 'past year,' in this case the year between the two movies, has seen a lot of changes in his life. Although he still hosts his television show Wayne's World, he now lives in an apartment building which was once a doll factory. He is very proud of the fact that Cassandra's carrer is taking off and they are still very involved with each other, but talks about how people are telling him he needs to find focus in his life and 'grow up.' In a dream, Wayne sees singer Jim Morrison, who tells Wayne to put on a music festival in Aurora, Illinois. The festival itself makes Wayne go through the process of booking bands and getting permits for the event, although the event itself isn't truly the core to the story. The festival takes a back seat to Wayne's romance with Cassandra, who he comes to acknowledge he truly loves and wonders about their future together. Wayne, about half way through the film, has to prove himself to Mister Wong, Cassandra's father. In a satire of classic Kung Fu movies, Wayne and Mister Wong battle each other while dubbing themselves. Wayne proves himself to be a worthy warrior, but does not earn the complete respect of Mister Wong. Cassandra's carrer now centers around her producer, Bobby Kahn, played by actor Christpher Walken. Wayne is suspiscious of Cassandra and Bobby's relationship together, as it becomes obvious to Wayne that it sees that where ever Cassandra is Bobby is also. Wayne spies on Cassandra and later confronts her about what he witnessed, causing her to punch him in the face and seeminly ending their relationship. Wayne struggles with this throughout the rest of the movie, wanting to make peace with Cassandra and win her back. Wayne later discovers that Cassandra is about to be wed to Bobby, forcing Wayne to abandon his post on the day of his festival to stop the wedding and pronounce his love for Cassandra. At the very last minute, he interupts the wedding ceremony of Cassandra and Bobby, where he then discovers that Mister Wong had set up the wedding to gain his green card. Wayne and Cassandra then return to Wayne's music festival where she performs and Aerosmith arrives shortly thereafter. The movie ends immediately after the festival, leaving the viewer to believe that Wayne has finally 'grown up' into an 'adult' now that he has not only confirmed his love for Cassandra but managed to organize and run a music festival without forgetting what it means to 'have fun.' Garth becomes involved with a seemingly older woman in Wayne's World 2, who he later discovers is married and hisentiore relatinship with the woman was a sham to get back at her husband, who she wants dead. Garth's character hasn't seem to have grown or changed much from the first Wayne's World movie, however by the end of Wayne's World 2 it appears as if he has matured emotionally to where Wayne's character was at the end of the first Wayne's World movie, although his character and his problems never appear to have found resolution by the end of Wayne's World 2.
Question: Who is Cassandras new producer?
bobby kahn