Question: What fighter, trained by Riku Immonen, knocked out Andy Ogle in 8 seconds in a UFC fight?

full_context: Document 1: Breidis Prescott: Breidis Enrique Prescott Consuegra (born May 3, 1983), best known as Breidis Prescott, is a Colombian professional boxer. In his early career he had a reputation as a fearsome puncher, winning 18 of his first 20 fights by knockout. In 2008, Prescott first became known on the world stage when he upset heavily favoured and then-undefeated Olympian Amir Khan, which gave rise to Prescott's nickname of "The Khanqueror".
Document 2: Buakaw Banchamek: Sombat Banchamek (Thai: สมบัติ บัญชาเมฆ , born May 8, 1982) AKA Buakaw Banchamek (Thai: บัวขาว บัญชาเมฆ , Buakaw meaning "white lotus") is a Thai welterweight Muay Thai kickboxer, who formerly fought out of Por. Pramuk Gym, in Bangkok, Thailand, under the ring name Buakaw Por. Pramuk (Thai: บัวขาว ป.ประมุข ). He is the former two-time Omnoi Stadium champion, Lumpini Stadium Toyota Marathon champion, Thailand Featherweight champion and two time K-1 World MAX champion. As of 1 August 2017, he is ranked the #5 lightweight in the world by CombatPress.com.
Document 3: Silviu Vulc: Silviu Dorin Vulc more commonly known as Silviu Vulc is a Romanian heavyweight mixed martial artist. Silviu Vulc spent his early career boxing in Romania, he then moved to Russia to train with Red Devil Sport Club team mates with Fedor Emelianenko and Alexander Emelianenko. Vulc spent two years there training and fighting. During this time he had ten MMA fights with eight wins and three losses, the first seven fights being semi-professional before moving into the professional league. Vulc had a short professional career, defeating Rodrigo Mendes in the Desert Combat Challenge in Israel and losing twice. His last fight being in 2008 for M-1 Global. Silviu has spent most of his time and energy over the years coaching others in boxing and MMA around the world including time spent in Russia, Romania and London, England.
Document 4: Gökhan Saki: Gökhan Saki (born October 19, 1983 in Schiedam, Netherlands) is a Dutch-Turkish mixed martial artist and former kickboxer. Fighting out of Mike's Gym in Amsterdam, he is two-time Dutch and European Muay Thai champion, "K-1 World GP 2006 in Amsterdam" tournament finalist and "K-1 World Grand Prix 2008 in Hawaii" champion as the first ever Turkish fighter to hold a K-1 tournament title. He is the former Glory Light Heavyweight Champion, winning the inaugural title by defeating Nathan Corbett in the semi finals, followed by Tyrone Spong in the finals. On May 25th, 2017, it was announced Saki had signed a multi-fight contract with the UFC. Saki is known for his swarming style of fighting and power punching.
Document 5: Kickboxer: Retaliation: Kickboxer: Retaliation is an upcoming American martial arts film directed and written by Dimitri Logothetis. Logothetis was attracted to the original Jean Claude Van Damme’s Kickboxer because of his martial arts background and that’s what inspired him to pursue the rights to the original, develop a reboot of the franchise and ultimately write, produce and direct a contemporary version of the pop culture, iconic Kickboxer. It was important that Logothetis to convince Van Damme to step into the role of mentor to ordain a new, high octane Kickboxer who has a sixth degree black belt in BJJ, Alain Moussi. Because Kickboxer: Vengeance was such a successful independent feature in the world market, it generated a sequel. It is a sequel to the 2016 film "". The film stars Alain Moussi, Jean-Claude Van Damme, Christopher Lambert, Ronaldinho, Mike Tyson and Hafþór Júlíus Björnsson. Aside from Moussi and Van Damme, Sara Malakul Lane and Sam Medina are reprising their roles from the previous film.
Document 6: Mehdi Khodabakhshi: Mahdi Khodabakhshi (Persian: مهدی خدابخشی‎ ‎ , born April 21, 1991 in Tonekabon, Iran) is an Iranian taekwondo practitioner. He has been practicing for more than 15 years. He has beaten several Taekwondo notables such as Aaron Cook and Steven Lopez and is the current world champion. He is currently ranked 1st in the welterweight division. Also he additionally won the gold medal in the welterweight division in the 2014 Asian Games in Incheon. He is a participant of the 2016 Rio Olympics, but lost in the 1/04-Finale against the Iranian born Azeri Milad Beigi Harchegani
Document 7: Khabib Nurmagomedov: Khabib Abdulmanapovich Nurmagomedov (Russian: Хабиб Абдулманапович Нурмагомедов ; Avar: ХIабиб ГӀабдулманапил НурмухӀамадов ; born September 20, 1988) is an undefeated Russian mixed martial artist of Avar heritage. He is a two time Combat Sambo World Champion, a wrestler and a judo black belt who currently fights in the Lightweight division of the Ultimate Fighting Championship. He currently holds one of the longest undefeated streaks in MMA with 24 wins. As of 17 November 2016, he is ranked the #1 contender in the UFC Lightweight division and #12 in official UFC pound-for-pound rankings and numerous other publications.
Document 8: Riku Immonen: Riku Immonen is a retired Finnish professional Muay Thai kickboxer and active muay thai coach. He is an amateur and professional Muay Thai World Champion. He trains fighters out of Turku Muay Thai. Most well known students are UFC fighter Makwan Amirkhani, Topi Helin and Daniel Forsberg. He trains also UFC fighter Teemu Packalen.
Document 9: Chan Sung Jung: Jung Chan-sung (Korean: 정찬성 born March 17, 1987, anglicized as Chan Sung Jung) is a South Korean mixed martial artist and kickboxer currently competing in the UFC's male Featherweight division. A professional competitor since 2007, Jung has also formerly competed for the WEC, Pancrase, World Victory Road, and DEEP. His nickname, "(The) Korean Zombie" comes from his ability to continue to move forward and fight aggressively, even after taking heavy blows. Jung was serving in the South Korean army until October 2016 and thus was not ranked by most MMA media outlets, however he was ranked as #5 in official UFC Featherweight rankings beforehand.
Document 10: Islam Makhachev: Islam Ramazanovich Makhachev (Russian: Ислам Рамазанович Махачев ; born October 27, 1991 in Dagestan) is a Russian mixed martial artist, judoka and sambist of Lak origin. He is a Combat Sambo World Champion, and currently fights in the lightweight division of the Ultimate Fighting Championship.
Document 11: Matt Hume: Matt Hume (born July 14, 1966) is an American mixed martial artist. He is the founder and head trainer at AMC Pankration in Kirkland, WA, which is home to UFC flyweight champion Demetrious Johnson, ONE bantamweight champion Bibiano Fernandes and he has trained numerous world class fighters including Josh Barnett, Tim Boetsch Bob Sapp, Chris Leben, Hayato Sakurai, Akira Shoji, Matt Brown, Rich Franklin, Mario Miranda and Caros Fodor.
Document 12: Rick Cheek: Richard P. "Rick" Cheek (born October 4, 1977) is an American kickboxer and mixed martial artist who competes in the heavyweight division. A North American Muay Thai champion as an amateur, Cheek turned professional in 2005 and debuted in K-1 the same year. He holds notable wins over WSOF standout Dave Huckaba in MMA, 2001 K-1 Japan Grand Prix Champion Nicholas Pettas and multiple time world kickboxing champion Mike Sheppard
Document 13: Jorge Rubio (boxing trainer): Jorge Enrique Rubio is a Cuban trainer in the sport of boxing. Rubio was a trainer of the Cuban national amateur boxing team. Rubio trains numerous professional fighters in Miami, Florida, including Gil Reyes, Juan Arroyo, and Stacey Reile. Rubio was announced as Amir Khan's trainer on July 26, 2008. After Khan's disastrous first-round KO defeat at the hands of relatively unknown Colombian Breidis Prescott, Khan and Rubio parted ways.
Document 14: Makwan Amirkhani: Makwan Amirkhani (born November 8, 1988) is a Kurdish born with Finnish nationality mixed martial artist competing in the featherweight division of the Ultimate Fighting Championship. Amirkhani is best known for his first round 8 second knockout on Andy Ogle which is one of the fastest knockouts in UFC history.
Document 15: KHK MMA: The Khalid Bin Hamad Al Khalifa Mixed Martial Arts (KHK MMA) is a martial arts organization based in Bahrain. It was founded under the patronage of His Highness Khalid bin Hamad Al Khalifa for its current CEO and professional MMA fighter Mohammed "The Hawk" Shahid in February 2015. Fighters competing under KHK MMA banner include: former UFC lightweight champion Frankie Edgar, UFC lightweight contender Khabib Nurmagomedov, UFC lightweight fighter Islam Makhachev, Bellator fighter James Gallagher, 2-time IMMAF champion Jose "Shorty" Torres, former UFC fighter and current Titan FC contender Alex Soto, and current Desert Force fighter Hamza Kooheji. KHK MMA activities include: coaching pro fighters, developing amateur MMA, promoting martial arts events, fitness gyms, and a sports gear brand.
ground_truth: Makwan Amirkhani