Question: When was Best Coffee in the city of formation of The Triptych's performer established?

full_context: Document 1: Extremist (album): Extremist is the seventh studio album by American metalcore band Demon Hunter. The album was released on March 18, 2014 through Solid State Records. "Extremist" sold nearly 18,000 copies its first week and debuted at no. 16 on the "Billboard" 200.
Document 2: Invisible Creature: Invisible Creature is a graphic design studio based in Seattle. It is run by brothers Don and Ryan Clark, co-founders of Asterik Studios. Don and Ryan Clark founded the metalcore band Demon Hunter, but now Don is no longer a member. The Clark brothers split with Asterik because they wanted to focus their attention on producing work for the music industry.
Document 3: 3/5 (album): 3/5 is the first album by Les Savy Fav. It was released in 1997 by Self-Starter Foundation. The LP release came in a pack of shower caps and is fairly difficult to find, sometimes fetching high prices on eBay. Coincidentally, only three-fifths of the line-up on this album, the band's first, remain in the present day line-up, as drummer Patrick Mahoney was replaced by Harrison Haynes before the group's second album, "The Cat and the Cobra", and guitarist Gibb Slife left before the recording of the "" EP.
Document 4: Three Views: Three Views is a 3CD compilation album by trumpeter Dave Douglas which combines three volumes originally released as music downloads on Greenleaf Music's Portable Series in 2011 and features Douglas' Brass Ecstasy, a Quintet with Ravi Coltrane and Vijay Iyer, and the So Percussion Ensemble.
Document 5: Starbucks: Starbucks Corporation is an American coffee company and coffeehouse chain. Starbucks was founded in Seattle, Washington in 1971. As of November 2016, it operates 23,768 locations worldwide.
Document 6: Metallica: This Monster Lives: The book follows the emotional roller-coaster both he and his film partner Bruce Sinofsky and the band Metallica went through during the creation film. The book takes in the time from Berlinger and Sinofsky's first meeting with Metallica in 1999 to the 2003 Summer Sanitarium Tour. Berlinger and Sinofsky's relationship was at an all time low, exacerbated by Berlinger's decision to direct the disastrous sequel to the Blair Witch. At the start of filming the relationship between the band members, especially between vocalist James Hetfield and drummer Lars Ulrich, is in a similarly perilous position after bassist Jason Newsted quit the band and long standing grudges between the remaining members threaten to escalate past the point of no return.
Document 7: Demonic Resurrection: Demonic Resurrection is a blackened death metal band from Mumbai, India formed in the year 2000. Their current line-up consists of Sahil "The Demonstealer" Makhija on vocals and rhythm guitar and Virendra "Viru" Kaith on drums.
Document 8: The Triptych: The Triptych is the third full-length album by metalcore band Demon Hunter which was released October 25, 2005. Produced by Aaron Sprinkle (Emery, Fair) and mixed by Machine (Lamb of God), "The Triptych" had three different album covers—implying a traditional triptych—by Dan Seagrave.
Document 9: Starbucks: Starbucks Corporation is an American coffee company and coffeehouse chain. Starbucks was founded in Seattle, Washington in 1971. As of 2018, the company operates 28,218 locations worldwide.
Document 10: Seattle: Still, very large companies dominate the business landscape. Four companies on the 2013 Fortune 500 list of the United States' largest companies, based on total revenue, are headquartered in Seattle: Internet retailer Amazon.com (#49), coffee chain Starbucks (#208), department store Nordstrom (#227), and freight forwarder Expeditors International of Washington (#428). Other Fortune 500 companies popularly associated with Seattle are based in nearby Puget Sound cities. Warehouse club chain Costco (#22), the largest retail company in Washington, is based in Issaquah. Microsoft (#35) is located in Redmond. Weyerhaeuser, the forest products company (#363), is based in Federal Way. Finally, Bellevue is home to truck manufacturer Paccar (#168). Other major companies in the area include Nintendo of America in Redmond, T-Mobile US in Bellevue, Expedia Inc. in Bellevue and Providence Health & Services — the state's largest health care system and fifth largest employer — in Renton. The city has a reputation for heavy coffee consumption; coffee companies founded or based in Seattle include Starbucks, Seattle's Best Coffee, and Tully's. There are also many successful independent artisanal espresso roasters and cafés.
Document 11: True Defiance: True Defiance is Demon Hunter's sixth full-length album. It was released April 10, 2012. Production work for the album comes from regular Solid State and Tooth & Nail Producer Aaron Sprinkle while mixing was finished by Jason Suecof.
Document 12: Hard rock: Although Foo Fighters continued to be one of the most successful rock acts, with albums like In Your Honor (2005) reaching number two in the US and UK, many of the first wave of post-grunge bands began to fade in popularity. Acts like Creed, Staind, Puddle of Mudd and Nickelback took the genre into the 2000s with considerable commercial success, abandoning most of the angst and anger of the original movement for more conventional anthems, narratives and romantic songs. They were followed in this vein by new acts including Shinedown and Seether. Acts with more conventional hard rock sounds included Andrew W.K., Beautiful Creatures and Buckcherry, whose breakthrough album 15 (2006) went platinum and spawned the single "Sorry" (2007), which made the Top 10 of the Billboard 100. These were joined by bands with hard rock leanings that emerged in the mid-2000s from the garage rock or post punk revival, including Black Rebel Motorcycle Club and Kings of Leon, and Queens of the Stone Age from the US, Three Days Grace from Canada, Jet from Australia and The Datsuns from New Zealand. In 2009 Them Crooked Vultures, a supergroup that brought together Foo Fighters' Dave Grohl, Queens of the Stone Age's Josh Homme and Led Zeppelin bass player John Paul Jones attracted attention as a live act and released a self-titled debut album that reached the top 20 in the US and UK and the top ten in several other countries.
Document 13: Starbucks: Starbucks Corporation Logo since 2011 Starbucks headquarters at Starbucks Center in Seattle, Washington Type Public Traded as NASDAQ: SBUX NASDAQ - 100 Component S&P 100 Component S&P 500 Component Industry Coffee shop Founded March 31, 1971; 47 years ago (1971 - 03 - 31) Pike Place Market, Elliott Bay, Seattle, Washington, U.S. Founders Jerry Baldwin Zev Siegl Gordon Bowker Headquarters 2401 Utah Avenue South, Seattle, Washington, U.S. Number of locations 28,218 (2018) Area served Worldwide Key people Myron E. Ullman (Chairman) Mellody Hobson (Vice Chairman) Kevin Johnson (President and CEO) Howard Schultz (Chairman Emeritus) Products Coffee beverages smoothies tea baked goods sandwiches Revenue US $22.387 billion (2017) Operating income US $4.135 billion (2017) Net income US $2.885 billion (2017) Total assets US $14.366 billion (2017) Total equity US $5.450 billion (2017) Number of employees 238,000 (2016) Subsidiaries Starbucks Coffee Company Ethos Water Evolution Fresh Hear Music La Boulange Bakery Seattle's Best Coffee Teavana Torrefazione Italia Website starbucks.com
Document 14: Demon Hunter: Demon Hunter is an American Christian metal band from Seattle, Washington, started in 2000 by brothers Don Clark and Ryan Clark. Although the brothers created the band together, only Ryan remains, since Don left the band to take care of his family. As of early 2010, the band has sold over half a million albums. The band's style is known for combining nu metal sounds and qualities with ones heard in metalcore.
Document 15: Seattle's Best Coffee: In 1983, the name again changed from Stewart Brothers Wet Whisker to Stewart Brothers Coffee. Shortly after, business began to expand, and new shops opened in Bellevue, Washington, and in Seattle's historic Pike Place Market a year later. In 1991, the company was renamed "Seattle's Best Coffee" after winning a local competition. Around 1995, Seattle's Best Coffee was purchased by a group of investors who own Torrefazione Italia. They formed a new company made up of both parties called Seattle Coffee Holdings. In 1997, Seattle Coffee Holdings changed its name to Seattle Coffee Company.
ground_truth: 1991
sub_queries: The Triptych >> performer Answer: Demon Hunter
Demon Hunter >> location of formation Answer: Seattle
When was Seattle 's Best Coffee established? Answer: 1991