Given this paragraph about Jiu-Jitsu, who taught Carlos Gracie.

Context: Brazilian jiu-jitsu was initially developed in 1925 by Brazilian brothers Carlos, Oswaldo, Gastão Jr., George, and Hélio Gracie, after Carlos was taught jiu-jitsu by a travelling Japanese judoka, Mitsuyo Maeda, who himself mastered his ground fighting while interacting with Taro Miyake, Sadakazu Uyenishi and Yukio Tani and catch wrestlers in Europe.

Answer: Mitsuyo Maeda