Question: What former leader of the Gracie Humaitá school in Rio de Janeiro, Brazil, with the help of his father, demonstrated the Ashi-Hishigi in several medias?
Sentence (from "Royler Gracie"): He ran the Gracie Humaitá school in Rio de Janeiro, Brazil for many years under his father Helio's direction, but currently lives in San Diego.
Relevant evidence: Yes