Given the question: Generate a question about the following movie plot: Christine Carlson (Linda Blair), an American college student, travels to West Germany to visit her fiance Mike (William Ostrander), who is serving in the US Army there. She tries to convince him to marry her promptly, but he chooses to delay marriage in order to re-enlist. Distraught by Mike's decision, Christine takes a late-night walk where she witnesses a kidnapping by the East German Stasi and gets kidnapped herself as well. She is transported to the East Zone, where she is brutally interrogated by the Stasi, forced to admit to false charges of espionage, and thrown into a women's prison with the common criminals, including the gang leader Sofia (Sylvia Kristel), who is the prisoners' "top bitch" and has de facto control of the entire prison population. Sofia takes pleasure in brutally tormenting and harassing Christine, until the latter loses her patience and fights Sofia in a no-holds-barred brawl. Meanwhile, Mike is determined to free his beloved, and tries to get the US Army and the West German BND to help him. At first they refuse, but ultimately they reluctantly go along with his plans and help him free Christine.
The answer is:
What does Ivan observe about Chicago?