Task: Explanation
Input (English): Sergio Casal Martínez (born 8 September 1962) is a former professional tennis player from Spain. During his career, he won three Grand Slam doubles titles, as well as the men's doubles Silver Medal at the 1988 Summer Olympics. Question: Who is older, Sergio Casal or Gabriela Sabatini? Answer: Sergio Casal
Output (English): Sergio Casal Martínez born 8 September 1962 is a former professional tennis player from Spain.