Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: Where does John attend high school? Title: Starship Troopers Movie plot: In the distant future, several hundred years after a revolution by Galactic War Veterans overthrew the world's governments and imposed a militaristic regime titled 'The Global Federation of Earth', humanity is at tense diplomatic relations with an alien race whose homeworld is the planet Klendathu (one of many planets inhabited by these creatures located on the other side of the Milky Way Galaxy) who are named the Arachnids, or 'Bugs'. John 'Johnny' D. Rico (Casper Van Dien), his girlfriend Carmen (Denise Richards), and best friend Carl (Neil Patrick Harris), who possesses psychic abilities, graduate from high school in Buenos Aires. Carmen and Carl enlist in the military to become citizens. Wanting to follow his girlfriend and friend, Johnny goes against his parents' desires and also enlists. But he finds that his grades are too low to join Carmen in Flight School and is assigned to the Mobile Infantry while Carl joins Military Intelligence.Johnny and the rest of the new recruits are drilled by the brutal Career Sergeant Zim (Clancy Brown). Johnny shows himself to be an outstanding leader and is made squad leader. He also meets a former high school classmate, "Dizzy" Flores (Dina Meyer), who has requested transfer to Johnny's unit ostensibly because the unit is the toughest but mainly because she's infatuated with Johnny. Over the next few weeks in boot camp, Johnny learns that Carmen is happy with her training and is working with his high school rival, Zander (Patrick Muldoon). Her decision to make the Fleet her career dashes Johnny's dreams as well as the future of his romance with her. Following a training incident in which one of his squad members is killed, Johnny is demoted from squad leader and publicly flogged in accordance with military law. As Johnny is telling his parents via videophone that he is quitting the Infantry the transmission is interrupted. The 'Bugs' have directed an asteroid at Earth, destroying Buenos Aires, killing his parents and most of the population of that city. As a result of...
The answer to this question is:
Buenos Aires