Generate a question that has the following answer: Gerd for the following movie plot: A young jewish boy, Solomon (Marco Hofschneider), is circumsized. Years later, on the day of his Bar Mitzvah, Kristallnacht occurs and his sister is killed. Solomon, his parents (Klaus Abramowsky & Michele Gleizer), and his two brothers Isaak (Rene Hofschneider) and David (Piotr Kozlowski) move to Lodz, Poland.The Germans attack Poland. Solomon's father sends him and Isaak away in hopes that they will find someplace safe. Isaak and Solomon are separated. Solomon is rescued by Soviet soldiers and is sent to a Soviet orphanage in Grondo. Solomon becomes part of the Soviet Communist Union of Youth.Germans attack the orphanage and as the orphans flee, Solomon is separated from them and later captured by German soldiers. Thanks to his fluent German, Solomon convinces the German soldiers that he is a German named Josef Peters. Solomon, now Josef (or Jupp) helps identify Stalin's son. Solomon is sent to aid Robert (Andre Wilms), a gay German soldier. Robert discovers Solomon is a Jew when he sees his circumcised penis. Robert promises to keep Solomons identity a secret. During a combat against the Soviets, Robert and two other German soldiers are killed, leaving Solomon by himself. Solomon then tries to surrender himself to the Soviet soldiers, but as he is walking across the battlefield other German soldiers command the Soviets to surrender. The Germans think Solomon is a hero and is sent to a Hitler Youth school.On his way to the Hitler Youth School, Solomon and the woman he is with have sexual relations on the train. It is revealed that Solomon and Hitler share the same birthday. At the school, Solomon is introduced as a war hero and a true German. He is assigned to room with Gerd who becomes his best friend. Solomon also meets Leni (Julie Delpy), a German girl who he falls in love with but cannot have sexual relations with because that would give way his true identity. In class they measure Solomon's face for racial purity and he is labeled to be Aryan, although he is Jewish. A doctor pays his once a year visit...
A:
What is the name of Solomon's best friend?