Question: The head chef of Urasawa is a former understudy of a chef born in what year?

Context paragraphs:
Hell's Kitchen (U.S. season 13): Season 13 of the American competitive reality television series "Hell's Kitchen" premiered on September 10, 2014 on Fox.  The prize was a head chef position at Gordon Ramsay's Pub & Grill at Caesars Atlantic City.  Gordon Ramsay returned as head chef and Andi van Willigan and James Avery returned as sous chefs.  However, Jean-Philippe Susilovic did not return as maitre d' and was replaced by Marino Monferrato.  It also marks the first time since 2010 that two seasons of "Hell's Kitchen" aired in the same year.  Kitchen Supervisor La Tasha McCutchen from Winter Haven, Florida won the competition, becoming the first winner since Christina Wilson, Holli Ugalde and Dave Levey to completely avoid nomination for elimination throughout the entire season.  This is also the first time that the series had a new narrator.

Arthur Potts Dawson: Arthur Potts Dawson (born 1971 in Camden, London) started cooking around 1990.  He started with a three-year apprenticeship with the Roux brothers, worked with Rowley Leigh at Kensington Place for two years, with Rose Gray and Ruth Rogers at the River Café for four years, Hugh Fernley-Whittingstall and Pierre Khoffman both for a year.  He worked as head chef at the River Café and went on to restyle Petersham Nurseries Cafe, re-launch Cecconi's restaurant, and to work as executive head chef for Jamie Oliver's Fifteen Restaurant.

James &quot;Jocky&quot; Petrie: James "Jocky" Petrie is a professional British chef born in Duror in Scotland.  He is best known for both his work alongside chef Heston Blumenthal as Head of Development of the Experimental Kitchen at The Fat Duck (one of four restaurants in Great Britain to have three Michelin stars), and his current work as Group Executive Development Chef for Gordon Ramsay.  As a chef he has regularly appeared as mentor and judge on a number of television shows including Masterchef, Heston's Fantastical Food, In Search of Perfection and Top Chef Suomi

Celebrity Head Chef: Celebrity Head Chef is the second series of TV3’s cookery series, Head Chef.  The series features Conrad Gallagher, the youngest chef ever to win a Michelin Star and stars Wagner Fiuza-Carrilho from The X Factor; Mary Burke, the mammy from Crystal Swing; Adele King (Twink); Geraldine from The Apprentice; Michael Hayes, the presenter from How Low Can You Go? ; and former model Kohlin Harris.

Urasawa (restaurant): Urasawa is a Japanese restaurant located in Beverly Hills, Los Angeles County, California run by head chef Hiroyuki Urasawa who is a former understudy of Masa Takayama.  As of 2014, the restaurant is considered the second most expensive in the world after Sublimotion at $1,111 per person.

Holger Stromberg: Holger Stromberg (born 15 March 1972), is a German celebrity chef.  At the age of 23 in 1994, he gained his first Michelin star whilst head chef at the restaurant Goldschmieding in Castrop-Rauxel, making him Germany's youngest Michelin starred chef.  He is owner and chef patron of Restaurant G in Munich, and the chef of the Germany national football team.

Ferran Adrià: Ferran Adrià Acosta (] ) is a Spanish Catalan chef born on May 14, 1962 in L'Hospitalet de Llobregat (Barcelona, Catalonia, Spain).  He was the head chef of the "elBulli" restaurant in Roses on the Costa Brava and is considered one of the best chefs in the world.

Manu Feildel: Manu Feildel (born Emmanuel Feildel in 1974) is a chef born in Nantes, France, trained in England and now living in Australia, most widely known for his participation in Australia's cookery competition programs "Ready Steady Cook", "MasterChef Australia" and "My Kitchen Rules" (MKR).  Manu achieved a solid reputation as head chef at the restaurant Bilson's before moving to open his own restaurant, Manu at L'Étoile, in 2009.  The restaurant closed in March 2014, when it became unprofitable.  His other failed restaurant ventures include L'Aperitif and Le Grand Cirque.

Masa Takayama: Masayoshi "Masa" Takayama (高山 雅氏 , Takayama Masayoshi ) (born 1 May 1954 in Kuroiso, Tochigi, Japan) is the chef and owner of Masa, a three-Michelin-starred Japanese and sushi restaurant in Manhattan, New York City.  He is also owner of Bar Masa, with two locations: one adjacent to his New York City restaurant, and one in the Aria Resort & Casino on the Las Vegas Strip in Paradise, Nevada.

Hell's Kitchen (U.S. season 17): The seventeenth season of the reality series "Hell's Kitchen" (subtitled as "Hell's Kitchen All Stars") began airing on September 29, 2017 on Fox.  This season marks the first in "Hell's Kitchen" history to have an all star edition as sixteen former contestants return to compete once again, and the winner of this season will receive the position as head chef at the first-ever Gordon Ramsay Hell's Kitchen Restaurant at Caesar's Palace in Las Vegas, Nevada.  All of the returning chefs made it onto the Black Team in their respective seasons.  Gordon Ramsay returns as host and head chef, Season 10 winner (and Season 15 sous-chef) Christina Wilson returns as the Red Team's sous-chef, and British chef and Masterchef judge James "Jocky" Petrie becomes the Blue Team's sous-chef.  Marino Monferrato returns as the maître d'.

Supporting paragraphs: Urasawa (restaurant) Masa Takayama
Answer: 1954