Please answer the following question: Generate a question about the following movie plot: The film explores the lives of the characters Felice Schragenheim (Maria Schrader), a Jewish woman who assumed a false name and who belongs to an underground organization, and Lilly Wust (Juliane Kohler), a married mother of four children, unsatisfied with her philandering Nazi officer husband. The film begins in 1997, with an 83-year-old Lilly (played by Inge Keller) taking up residence in a dilapidated flat that once served as an underground hideout. Brought to a retirement home, Lilly encounters her old maid Ilse (played by Johanna Wokalek in the 1940s, by Kyra Mladeck in 1997), who was rounded up during 1945, and is already a tenant. In 1943, Felice, assuming a false last name and working as a journalist at a Nazi newspaper, meets Lilly via her friend and sometimes lover Ilse, who works as Lilly's housekeeper. Instantly smitten, she takes the initiative in the love affair by sending flagrant letters to Lilly and signing her name as Jaguar, much to Ilse's dismay. One fateful afternoon, Felice, Ilse, and their friends Klara and Lotte are accosted by German soldiers, and all but Lotte manage to escape. Shot down by the soldiers, they find no identification on Lotte's body except for a photograph of her and Felice. Lonely due to the constant absence of her husband, Lilly engages in a series of affairs with other men, but is disillusioned by the callous treatment of her latest tryst with another Nazi officer. She grows closer to Felice, who attempts to kiss her during a New Year's Eve Party in her Berlin apartment after Lilly discovers her philandering husband with Ilse, but rejects her. As her husband tries to make amends with her the following morning, Lilly realizes she has never loved him and reconciles with Felice. With her husband again away at war, Lilly and Felice begin a shaky but intense relationship. The film features both erotic encounters and sentimental love poems (quoted from the book), and during one love scene Felice proclaims Lilly is an Aimee to Felice as Jaguar. On Lilly's birthday,...
A:
What is the signature on Lily's love letter?