Q: In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
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
A:
 He is the son of former World Boxing Champion, Mexican Ricardo López.