Task: Explanation
Input (English): Hank Pfister (born October 9, 1953) is a former tennis player from the United States, who won two singles titles (1981, Maui and 1982, Newport) during his professional career. The right-hander reached his highest individual ranking on the ATP Tour on May 2, 1983, when he became World No. 19. Question: Which tennis player has retired, Hank Pfister or Maria Sharapova? Answer: Hank Pfister
Output (English): Hank Pfister born October 9, 1953 is a former tennis player from the United States, who won two singles titles 1981, Maui and 1982, Newport during his professional career.