Question: The cheap gold jewelry in which a Cockney Wanker wears is manufactured by a catalog retailer that is a subsidiary of which company?

Context paragraphs:
ULTRA Diamonds: ULTRA Diamonds was the largest seller of fine jewelry in factory outlet and value centers in the United States.  ULTRA was a manufacturer as well as a direct importer of diamonds, gemstones, and gold jewelry.  At one point, Ultra operated over 100 stores in outlet centers and 38 other format locations (primarily licensed jewelry departments).  After its acquisition by Signet Jewelers, ULTRA Diamonds stores were re-branded as Kay Jewelers.

Gold party: A gold party is similar to a Tupperware party in that a small group gathers at a host's home to sell their gold jewelry to a gold buyer.  They are becoming increasingly popular as people look for ways to raise money during the current recession.  The buyer, generally, weighs and tests jewelry and other items for party guests.  The testing includes a variety of means, including acid tests, magnet tests, and other methods to determine gold content.  If a guest decides to sell the items, the buyer pays her at the party, and the item is sent to a refinery to be melted down.  The host receives a commission for each sale, usually around 10%.

New Orleans Silversmiths: New Orleans Silversmiths is a jewelry and silverware retailer that specializes in both contemporary and antique gold jewelry, as well as antique holloware.  It was established in 1938 by Karl Dingeldein, a third generation silversmith from Hanau, Germany who had emigrated to the US.  The Dingeldein family's long tradition of metal work and silver manufacture, both in Germany and the U.S., is well documented.  The present owners acquired the business in 1966 and for many years it has been located near the center of the French Quarter, the oldest part of the city.  The shop handles new and estate silverware and jewelry.

Sierra Trading Post: Sierra Trading Post is an online, brick-and-mortar, and catalog retailer of off-price merchandise operated by the TJX Companies.  The Cheyenne, Wyoming-based company offers products in categories such as outdoor recreation, fitness and adventure gear, and apparel, along with footwear, clothing, and home decor.  Sierra Trading Post sells merchandise through 16 retail stores (as of June 2017), two mailed catalog titles, and a company website.  It carries products from approximately 3,000 name-brand manufacturers.

Black Hills gold jewelry: Black Hills gold jewelry is a type of jewelry manufactured in the Black Hills of South Dakota.  It was first created in the 1870s during the Black Hills Gold Rush by a French goldsmith named Henri LeBeau, who is said to have dreamed about the design after passing out from thirst and starvation.  Black Hills gold jewelry depicts leaves, grape clusters and vines, and is made with alloys of gold with standard yellow gold as well as green and pink gold.  In 1980, the 8th Circuit affirmed an injunction ruling that if a manufacturer was to call its jewelry Black Hills Gold, then it must be made in the Black Hills.  The state of South Dakota designated Black Hills gold as the official state jewelry in 1988.

Swanson Health Products: Swanson Health Products (SHP) is a natural health catalog and Internet marketing company headquartered in Fargo, North Dakota.  The company sells natural health and wellness products, including health foods, dietary supplements such as vitamins, minerals, herbs, as well as natural personal care products direct to consumers through mail-order catalogs and an e-commerce website.  Swanson Health Products is The United States' largest privately held vitamin catalog retailer and is one of Fargo’s major employers with an estimated workforce of 500 employees.

UncommonGoods: UncommonGoods, LLC is a Brooklyn-based, privately held, American online and catalog retailer, founded in 1999.  The UncommonGoods website launched in July, 2000.  Its inventory consists of small production gifts, home accents, jewelry, accessories, tabletop, art, games, books, food and drink and DIY kits, 40% of which are handmade by independent artists and artisans, frequently of recycled, reclaimed, or upcycled materials.

State Line Tack: State Line Tack, a division of TABcom, LLC, is an equine products and supplies retailer.  Beginning as a single outlet in Plaistow, New Hampshire in 1980, on the state line between New Hampshire and Massachusetts, State Line Tack converted an old barn into a two story retail tack store.  At that time, it offered the largest selection of horse supplies in a single location nationwide, and offered more reasonably priced lines of inventory than most of its competitors.  It grew into a direct mail catalog retailer within a few years after being purchased by mail order pet supply giant Sporting Dog Specialties.  In 1996, PetSmart, Inc. acquired Sporting Dog Specialties and its subsidiary State Line Tack for $45 million mostly paid in company stock, and opened more than 160 full-size (about 3,000 square feet) equine departments inside PetSmart stores.  The Plaistow store moved to Salem, New Hampshire, expanding to over 10000 sqft .

Cockney Wanker: Cockney Wanker is a character created by Graham Dury and Simon Thorpe in "Viz" based on a stereotyped male Cockney.  Wanker speaks in rhyming slang (often slang invented by the writers) and spends his days drinking and selling stolen or unworkable goods to passers-by from an East End market stall.  Another of Wanker's specialities is trading used cars.  Playing upon the stereotype of the indigenous population of London being fantasists, Wanker often buys a car, sells it back to the same person, for the same amount of money, then declares the transaction to have been "A nice little earner!"  He wears cheap gold jewellery or Argos bling and 'Laahndan' gangster dark glasses, and is often seen smoking a cigar.

Argos (retailer): Argos is a British catalogue retailer operating in the United Kingdom and Ireland, and a subsidiary of Sainsbury's.  The company trades both through physical stores and online, with over 845 retail stores, 29 million yearly store customers, and nearly a billion online vistors per annum, makes it one of the largest high street retailers in the United Kingdom.

Supporting paragraphs: Cockney Wanker Argos (retailer)
Answer: Sainsbury's