Task: Explanation
Input (English): Alonso López (born May 28, 1986 in Mexico City) is an undefeated Mexican professional boxer in the Flyweight division. He was born in Mexico City, Distrito Federal, Mexico. He is the son of former World Boxing Champion, Mexican Ricardo López. Question: The father of Alonso López defended what title twice before retiring? Answer: IBF Light Flyweight Championship
Output (English):  He is the son of former World Boxing Champion, Mexican Ricardo López.