Question: Who was a student of Rolls Gracie and ran the Gracie Humaitá school in Rio de Janeiro?

Passages:
Rodrigo "Comprido" Medeiros (born January 11, 1977 in Rio de Janeiro, Brazil) is a Brazilian jiu-jitsu black belt.  His nickname, Comprido, is Portuguese for "long" - a reference to his tall stature.  Rodrigo began BJJ at the age of sixteen.  He received his black belt from Rolls Gracie student, Romero "Jacaré" Cavalcanti, he also trained under Fernando 'Magrao' Gurgel and is one of a select group of Jiu-Jitsu competitors to have won the prestigious World Jiu-Jitsu Championship openweight titles twice.  Rodrigo has also been a Jiu-Jitsu instructor to mixed martial arts fighters such as former UFC Heavyweight Champion Brock Lesnar, former Bellator Heavyweight Champion Cole Konrad, Pat Barry, and Chris Tuchscherer. Mauricio Villardo Reis (born January 14, 1975) best known as Mauricio Villardo is a fourth-degree black belt in Brazilian Jiu-Jitsu under Royler Gracie, head instructor of Gracie Humaitá and he is also a former World Champion of the World Jiu-Jitsu Championship of the International Brazilian Jiu-Jitsu Federation (IBJJF).  Living close to the beautiful beaches in Brazil, Mauricio's hobby was surfing, but once he experienced Jiu-Jitsu, he fell in love with the sport.  Mauricio’s first experience with the martial arts was not Jiu-Jitsu.  When he was seven,he began practicing Judo at Clube do Flamengo,in Rio de Janeiro. Royler Gracie (born December 6, 1965) is a retired Brazilian-American mixed martial artist and Brazilian jiu-jitsu practitioner.  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. Saulo Ribeiro (born July 2, 1974), brother of the equally famed Xande Ribeiro, is a 5th-degree black belt in Brazilian Jiu-Jitsu.  After earning a black belt in Judo, he began his training of Brazilian Jiu-Jitsu in Rio de Janeiro under Royler Gracie, the son of Hélio Gracie, at the famous Gracie Humaitá. Castor Gonçalves de Andrade e Silva (1926 – April 11, 1997) was a well-known "bicheiro" in Rio de Janeiro.  From the 1980s, Castor de Andrade was the uncontested leader of all the main "bicheiros" of the city of Rio de Janeiro, and had more than 100 policemen and a number of public servants, prominent politicians, and judges working for him.  Castor was also very involved in the Brazilian Carnival and in soccer—he was the major sponsor of Bangu Atlético Clube and even called the "owner of Bangu", and he was also the patron of samba school Mocidade Independente de Padre Miguel.  He also helped found in 1984 the Liga Independente das Escolas de Samba do Rio de Janeiro, which has run the Rio de Janeiro Carnival ever since and has served as the legal cover for the "jogo do bicho cartel". Gracie Humaitá or Academia Gracie de Jiu-Jitsu is a Brazilian Jiu-Jitsu academy on Humaitá Street, in Botafogo, Rio de Janeiro, Brazil, founded by Carlos Gracie.  The Academy offers classes in Gracie Jiu-Jitsu. Wellington Leal "Megaton" Dias is a Brazilian jiu-jitsu (BJJ) practitioner, and an official black belt representative of the Royler Gracie Jiu-Jitsu Association.  Wellington originally trained under Rogerio Camoes and later at the legendary Gracie Humaitá jiu-jitsu school in Rio de Janeiro.  Wellington received his black belt at the age of 18.  Wellington is currently a fifth degree black belt under Royler Gracie. Francisco Manuel da Silva (February 21, 1795 – December 18, 1865) was a songwriter and music professor.  He was born and died in Rio de Janeiro.  He had great prominence in the musical life of Rio de Janeiro in the period between the death of José Maurício Nunes Garcia and Antônio Carlos Gomes.  He was a singer of Capela Real since 1809, and later a cello player.  He was one of the founders of Imperial Academia de Música e Ópera Nacional (National Imperial Music and Opera Academy), of Sociedade Beneficência Musical e Conservatório Imperial de Música , which became Instituto Nacional de Música (Nacional Music Institute) and is called Escola de Música da Universidade Federal do Rio de Janeiro (Rio de Janeiro University Music School). Carlos Henrique "Caique" Elias (born October 30, 1957) is a 7th degree red-and-black belt master of Brazilian Jiu-Jitsu (BJJ).  After starting his martial arts training in judo at age 15, he began training in 1975 with the Gracie family at the original Gracie Humaitá academy in Rio de Janeiro, Brazil.  In 1982, Elias became one of only eight non-Gracies ever to receive his black belt directly from Hélio Gracie. Rolls Gracie ([ˈɡɾejsi] 1951–1982) was a Brazilian martial artist.  He was a prominent member of the Gracie family known for their founding of Brazilian jiu-jitsu (BJJ) and considered by some the family's best ever fighter.  He was teacher of Rickson Gracie, Carlos Gracie Jr., Royler Gracie, Márcio "Macarrão" Stambowsky, Rigan Machado and Romero "Jacare" Cavalcanti.  He died in a hang-gliding accident in 1982.

Supporting sentences:
 He was teacher of Rickson Gracie, Carlos Gracie Jr., Royler Gracie, Márcio "Macarrão" Stambowsky, Rigan Machado and Romero "Jacare" Cavalcanti.  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.