Question: What name did the burger restaurant Wimpy's change to in 1989-1990?
About the article "Hamburger", section "United Kingdom and Ireland".

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Success of the Biff Burger franchise did not last though due to monetary problems in the 1970s.
In 1962, the Mary Carter Paint Company bought the National Biff-Burger System.
It provided the financial support to the Biff Burger restaurants in the form of supplying food materials and restaurant equipment.
However, business ventures in the direction of casinos resulted in finance imbalances and the Mary Carter Paint company relieved its support of the National Biff-Burger system in 1976.
Without its main means of attaining supplies, the Biff Burger franchise struggled to sustain itself.
Many of the drive-in stands were sold and forced to close down.
By the mid-1980s, virtually all existing locations of Biff Burger restaurants went out of business. 
Whataburger is sometimes confused with the What-A-Burger (note hyphens) chain of family-operated restaurants in Virginia, North Carolina and South Carolina.
The first What-A-Burger store opened in 1950 by entrepreneur Jack Branch near Newport News, Virginia at Newport News Circle (intersection of Jefferson Avenue and U. S. Route 258) in the former Warwick County.
Branch's first location predated the first Texas Whataburger restaurant slightly; the move took place after a modernization project involving the traffic circle.
What-A-Burger and Whataburger were unaware of each other's existence several states apart until around 1970, when there was some correspondence.
However, no legal actions took place until 2002-2003, when the two companies sued each other over the alleged trademark infringement.
The Court of Appeals, in 2004, eventually decided the Texas Whataburger had a legitimate trademark; but the Virginia chain did not harm the much larger Texas-based chain in any way, nor did they cause any reasonable public confusion.
The court said "There is no evidence — nor can we imagine any — that consumers are currently likely to be confused about whether the burgers served by Virginia W-A-B come from Texas or Virginia.
"A second restaurant chain based in North Carolina, named What-A-Burger Drive-In, owned by Eb and Michael Bost, was not a party to the lawsuit, but under case law procedures, would also retain their name.
It visibly numbered their stores starting from #1 in Kannapolis, North Carolina to #15 in Concord, North Carolina, of which six remain in operation . 
__NOTOC__Coq d'Or (French for "Golden Chicken") is a former restaurant located in Rotterdam in the Netherlands.
It was a fine dining restaurant that was awarded one Michelin star in the period 1957-1989.
After a change of course, the restaurant lost its star in 1989.
In 1995 the name of the restaurant was changed to "Restaurant Kip" (Dutch for "Chicken"). 
Blum was named the new CEO of Burger King Corporation—the fast food restaurants—in late 2002.
Blum's mission...to turn around the quickly declining company and bring its bottom line back in the black.
Burger King Corporation's change to Blum was made after Diageo sold it to the private equity partners: Texas Pacific Group, Bain Capital, and Goldman Sachs.
During Blum's tenure at Burger King he led the franchise to considerable improvement in its financial performance and the number 2 burger restaurant chain in the world.
In Blum's first year at Burger King profits doubled and positive growth was trending; the average restaurant sales trended from negative 7 percent to a dramatic increase at positive 4 percent.
This proved advantageous to a very successful IPO for Burger King in 2006. 
The award was instituted in the 1971 Fan Awards and included all musicians.
It was renamed Favorite SG Instrumentalist in 1989, the tenth and final year Anthony Burger won the award.
In 1990, the award was renamed in Burger's honor, as the Favorite Instrumentalist / Anthony Burger Award.
As part of this change, Burger handed out but was no longer eligible to win the award.
In the 1997 awards, the category was split into two.
Up until 1997, a pianist had virtually always taken home the award; in 1997, the Favorite Musician award was re-structured to be handed out to any musician other than a pianist, while the pianist award became a separate category.
In the 2007 awards, the categories were again combined.