Given the task definition, example input & output, solve the new input case.
In this task, you will be presented with a text and a pronoun. You should write the name that the pronoun refers to. Position of the pronoun in the text is showed within two "_"s.
Example: He grew up in Evanston, Illinois the second oldest of five children including his brothers, Fred and Gordon and sisters, Marge (Peppy) and Marilyn. His high school days were spent at New Trier High School in Winnetka, Illinois. MacKenzie studied with Bernard Leach from 1949 to 1952. _His_ simple, wheel-thrown functional pottery is heavily influenced by the oriental aesthetic of Shoji Hamada and Kanjiro Kawai. <sep>, Pronoun: His
Output: MacKenzie
Based on the text, his refers to MacKenzie.

New input case for you: He then became a student again, using his Technische Hochschule thesis as the basis for a Doctor of Philosophy degree from the State University of Iowa. He became an instructor at West Point in August 1937, where he was promoted to captain on 13 June 1939. In June 1941, Colonel James C. Marshall summoned Nichols to the Syracuse District to become area engineer in charge of construction of the Rome, New York Air Depot. _He_was promoted to major on 10 October 1941 and lieutenant colonel on 1 February 1942, when Marshall asked him to take on additional responsibility as area engineer in charge of construction of a new TNT plant, the Pennsylvania Ordnance Works, in Williamsport, Pennsylvania. <sep>, Pronoun: He
Output:
Nichols