You will be given a definition of a task first, then some input of the task.
In this task, you will be shown an extract from a movie plot. You need to read the extract and create questions that can be answered from the extract. The questions should be well-formed and grammatically correct. The questions should be completely answerable from the given passage and should not require any external knowledge. Subjective questions are not allowed. Create questions that result in factoid answers. A simple rule of thumb to decide whether a question is factoid or not is to see if two different people with average reading/comprehension skills would come up with the same answer after reading the passage.

An unnamed US president (whose appearance is modeled after Bill Clinton and whose voice is modeled after George W. Bush) is running for reelection during a divisive war, and one of his speech writers, David Murch (Jon Tenney), goes on TV to speak with talk show host Marty Clark (Terry David Mulligan) and strident right-wing sexpot (and Ann Coulter-like) Jane Cleaver (Thea Gill). Another guest is Janet Hofstader (Beverly Breuer), the Cindy Sheehan-like mother of a dead soldier, who demands to know what her son died for. Murch gets a bit teary-eyed and explains that he lost his older brother Philip (Ryan McDonnell) in Vietnam."Believe me," he tells the grieving mom, "if I had one wish, I would wish for your son to come back, because I know he would tell us how important this struggle is." Cleaver is so impressed with Murch's handling of the situation that she takes him out for a drink later, picks his brain, and eventually seduces him. The Karl Rove-like Kurt Rand (Robert Picardo) interrupts their tryst, calling to let Murch know that the president plans to make his line part of his stump speech.Soon, the soldiers killed in Iraq do start returning from the dead, and it doesn't go the way Murch predicted. They are not back to feast on the living, but unhappily for the president and his supporters, they just want a chance to vote in the upcoming election. "We'll vote for anyone who ends this war," one explains. The spin machine goes into overdrive, but the dead are determined to make their voice heard even going as far as one soldier killing Kurt Rand by acting out the zombie stereotype (gouging his eye and slamming his head into the table) when Rand tried to force him to sign an unwanted document by threatening the soldier's mother.While voting results are being counted during the election, people within the current administration decide to skew the results so the current administration remains in power. After the election results are broadcast, more soldiers begin to return from the dead - but not just ones from Iraq: Soldiers begin to return from World War I and II, the Vietnam War, the Civil War, and etc. Eventually all of the people who died during war time to protect the United States of America have returned from the dead to seek their revenge.The progress of the movie also reveals a shadowy mistake from Murch's past. He believed that his brother Philip was murdered in the Vietnam War only to discover that it was he who unintentionally killed him long ago with a gun in a game of "friend or foe". After Cleaver attacks the soldiers with her shotgun, Murch kills her and fails to kill himself. Murch is countered by a soldier that asks him to join them, saying "We're looking for a few good men." Philip is among those returning from the grave, saying he forgives Murch for killing him, and then snaps Murch's neck.Now one of the zombies, Murch announces that he will show anyone who sends their brothers and sisters to die for a lie the true face of hell.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Who unintentionally killed Philip?