Question: Ralek Gracie is the nephew of a retired mixed martial artist who was born in which year ?

Context articles: Rickson Gracie
Roger Gracie
Cung Le
Hidehiko Yoshida
Alexandre Dantas
Renzo Gracie
Kazushi Sakuraba
Ralph Gracie
Ralek Gracie
Robin Gracie

Rickson Gracie (] ; born November 21, 1958) is a Brazilian 9th degree red belt in Gracie Jiu-Jitsu and a retired mixed martial artist.
 He is a member of the Gracie family: the son of Hélio Gracie, brother to Rorion and Relson Gracie, and half-brother to Rolker, Royce, Robin and Royler Gracie.
 In November 2014 he became an inductee of the Legends of MMA Hall of Fame, alongside Big John McCarthy, Pat Miletich, and Fedor Emelianenko.
Roger Gracie Gomes (born September 26, 1981) is a Brazilian Jiu-Jitsu practitioner and mixed martial artist.
 A member of the Gracie family, he is the son of Reila Gracie (daughter of Carlos Gracie) and Mauricio Motta Gomes.
 Roger was awarded his black belt by his cousin Renzo Gracie at the behest of Carlos Gracie, Jr. whilst training in New York in 2003.
 He is currently a third degree black belt.
 Roger Gracie is the founder and head instructor at The Roger Gracie Academy located in Kensington, London, England.
 Notable Black belt promotions include Raymond Stevens (judoka), Nick Gregoriades & Kywan Gracie Behring.
 Roger is also an active mixed martial arts competitor and is the current ONE World Cruiserweight Champion.
Cung Le (Vietnamese: "Lê Cung" ; born May 25, 1972) is a Vietnamese-born American actor, retired mixed martial artist and Sanshou kickboxer.
 He competed as a middleweight in the Ultimate Fighting Championship (UFC), holding a record of 2–2 with the organization.
 In Sanshou, he is a former International Kickboxing Federation Light Heavyweight World Champion, having a professional Sanshou record of 16–0 before moving to mixed martial arts (Le also held a kickboxing record of 17–0).
 He defeated Frank Shamrock to become the second Strikeforce Middleweight Champion before vacating the title to further pursue his acting career.
 Le is perhaps best known in mixed martial arts for competing in Strikeforce, holding a record of 7–1 with the organization before its demise.
Hidehiko Yoshida (吉田 秀彦 , Yoshida Hidehiko , born September 3, 1969) is a Japanese gold-medalist judoka and retired mixed martial artist.
 He is a longtime veteran of Japan's PRIDE Fighting Championships, competing in the Middleweight (93kg) and Heavyweight divisions.
 He won gold at the 1992 Summer Olympic Games at 78 kg.
 Yoshida also had two famous fights with MMA pioneer Royce Gracie that resulted in a no-contest and a time-limit draw.
Alexandre "Cafe" Dantas (born March 1, 1979) is a Brazilian retired mixed martial artist.
 He competed in the Heavyweight division.
 He lost his last fight at UFC 41 against Gan McGee on February 28, 2003.
 He is a 3 times world champion in Brazilian jiu-jitsu, the 2002 champion in the open division Brazilian Championship, a 5 times Rio de Janeiro jiu-jitsu champion, the 2007 champion of de ADCC trials in Brazil, the Brazilian Teams Champion at Gracie Barra team, 3 time champion of Brazil X USA jiu-jitsu, 3 time Pan-American jiu-jitsu champion, the 2000 USA Jiu-jitsu champion, 5 time champion of the open division of Copa Café Jiu-jitsu in MIguel Pereira - Rio de Janeiro, among other championships.
Renzo Gracie ( ; ] ; born March 11, 1967) is a Brazilian mixed martial artist and Brazilian Jiu-Jitsu practitioner.
 A member of the Gracie family of Brazil, Renzo is a 6th Degree Black in Brazilian Jiu-Jitsu under Carlos Gracie Jr..
 He is the son of Robson Gracie, grandson of Carlos Gracie, nephew of Carlos Gracie, Jr. grandnephew of Helio Gracie, and the 1st cousin once removed of Royce Gracie.
 In mixed martial arts, Renzo has competed in the Ultimate Fighting Championship, Pride Fighting Championships, K-1, RINGS, and International Fight League (head-coaching the New York Pitbulls).
 He holds notable victories over five former UFC Champions: Frank Shamrock (UFC Light Heavyweight Champion), Carlos Newton (UFC Welterweight Champion), Pat Miletich (UFC Welterweight Champion), Maurice Smith (UFC Heavyweight Champion), and Oleg Taktarov (UFC 6 Tournament Winner)
Kazushi Sakuraba (桜庭 和志 , Sakuraba Kazushi , born July 14, 1969) is a Japanese mixed martial artist and professional wrestler, currently signed to Rizin Fighting Federation.
 He has competed in traditional puroresu for New Japan Pro Wrestling and shoot-style competition for UWFi and Kingdom Pro Wrestling.
 He has fought in MMA competition in the Ultimate Fighting Championship, Pride Fighting Championships, Hero's and Dream.
 He is known as the "Gracie Hunter" or the "Gracie Killer" due to his wins over four members of the famed Gracie family: Royler Gracie, Renzo Gracie, Ryan Gracie, and Royce Gracie.
 In particular, Sakuraba is famous for his initial fight with Royce, which lasted ninety minutes.
Ralph Gracie (the Pitbull; born May 25, 1971) is a Brazilian martial artist who has competed in mixed martial arts.
 He is the son of Robson Gracie and brother to Charles Gracie, Renzo Gracie and the late Ryan Gracie of the Gracie family.
Ralek Gracie ( ; born October 4, 1985) is an American Brazilian jiu-jitsu practitioner and mixed martial artist.
 As the son of Rorion Gracie, he is a member of the Gracie family, and the nephew of Legends of MMA Hall of Famer Rickson Gracie and UFC Hall of Famer Royce Gracie.
 He was awarded his black belt in Brazilian jiu-jitsu by his grandfather Hélio Gracie.
 He is also the founder of Metamoris, a submission-only grappling promotion.
Robin Gracie is a Brazilian professional mixed martial artist and Brazilian Jiu-Jitsu practitioner.
 Robin is the youngest son of Hélio Gracie.
 He currently resides in Barcelona and runs the official Gracie Jiu-Jitsu Academy of Spain and teaches seminars throughout Europe and North America.
 He was a Vale Tudo competitor and was a 1998 ADCC Submission Wrestling World Championship Silver Medalist.
 Robin was trained by his father Hélio, and his brothers Royler Gracie, Rolker Gracie and Royce Gracie.
 Robin is also notable for a widely published no holds barred fight he took within his own academy, in what was part of one of the first "Gracie Challenge", against French journeyman fighter and black belt in BJJ, Damien Riccio in 2001.