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.

Q: Context: The story is not linked to the first part of the series. Instead, it focuses on a fictional explanation for the Ryanggang explosion in 2004, in which an unexplained mushroom cloud occurred in North Korea. After reconnaissance satellites detect a large, three-stage Topol intercontinental ballistic missile carrying a nuclear weapon in North Korea, which can strike anywhere in the continental United States, a fictional United States President Adair T. Manning (Peter Coyote) orders a team of U.S. Navy SEALs to destroy the missile and the launch site. The team is led by Lieutenant Robert James (Nicholas Gonzalez). The Pentagon aborts the mission after it receives new information, but by the time the abort order is sent, two SEALs have already parachuted into North Korean territory. James stops the third SEAL from deploying, accidentally knocking the man's helmet against the status indicator mounted near the door. The lieutenant steps onto the makeshift ramp to peer outside, returning to the doorway to inform the rest of men of the abort. The high-speed winds from outside rip the indicator loose and send it flying into the lieutenant's face. Stumbling backwards, James loses his balance and is sucked out of the plane. Callaghan disobeys orders to stand fast, strikes his commanding officer, and follows the first three, taking a radio with him. When North Korean forces led by Commander Hwang (Joseph Steven Yang) find the SEALs, two of the Navy SEALs are killed in a gun battle, and James and Callaghan are captured and tortured by Hwang and his men. After South Korean special forces rescue James and Callaghan, President Manning and the South Korean government send the SEALs and South Korean special forces to destroy the missile site. But after losing radio contact with the SEALs, the President and his top advisers believe that they have been captured again. Under pressure from his military advisor, General Norman Vance (Bruce McGill), the President decides to send B-2 stealth bombers to destroy the site, which would start a full-scale war against North Korea. The SEALs and the South Korean special forces are almost recaptured by Hwang, but he is shot by a defecting officer. James and the South Koreans destroy the missile silo with a bomb before the bombers reach the missile site, which averts the bombing and prevents a full-scale war. A tribunal convicts Callaghan of striking an officer (1 year) and disobeying an officer (10 years). Due to the "black op" nature of the mission, the transcript of the hearing is deemed classified and the charges are expunged from his record, leaving him free to return to his family. Meanwhile, James meets the president in a classified meeting, bringing his mentor Master Chief Scott Boytano (Keith David) as witness to James' receiving of an award. The film closes with Boytano telling James he wasn't red flagged because Boytano had never seen anyone who desired so badly as James did to be a SEAL. During the credits there is a news report on the Ryanggang explosion. 
 Question: Who destroys the missile silo?

A: james and the south koreans
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Q: Context: FreeBSD is a free Unix-like operating system descended from Research Unix via the Berkeley Software Distribution (BSD). 
 Question: The FreeBSD is based upon what?

A: berkeley software distribution
****
Q: 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?

A:
bobby kahn
****