TASK DEFINITION: Given a document, find the main entity about whom the author is writing. Write the full name if mentioned in the text. Note that URLs in the text have been replaced with [Link].
PROBLEM: Sen. Bob Corker (R-TN)  speaks with reporters after announcing  his  retirement at the conclusion of  his  term on Capitol Hill in Washington  U.S.  September 26  2017. REUTERS/Aaron P. Bernstein
WASHINGTON (Reuters)  - U.S. Senator Bob Corker   the influential Republican chairman of the Senate Foreign Relations Committee  said on Tuesday he will not run for re-election  a blow to a party already struggling to balance divisions between mainstream and more populist wings.
An establishment Republican   Corker  has been criticized from the right  and a conservative activist had already announced a primary challenge. But he was expected to keep the seat  and had amassed a $7.5 million campaign war chest.
 Corker  has ruled out running for governor of Tennessee.
âI have no idea what Iâm going to do. No idea whatsoever â  Corker  said in an interview. But he said he was not leaving out of frustration over deep party divides that have often paralyzed Congress.
 Corker  announced  his  retirement on the day of the failure of the latest Republican effort to repeal former Democratic President Barack Obamaâs healthcare law.
âI am not going to be one of the people who leaves here badmouthing what is one of the greatest privileges of oneâs life â  Corker  said.
He said he realized he was ready to retire on Aug. 24 during a factory groundbreaking in Clarksville  Tennessee  and almost announced his decision at least twice before Tuesday.  Corker  said that he made his announcement now to allow a strong candidate time to enter the Senate race.
 Corker  is the first senator to announce  his  retirement ahead of the 2018 mid-term elections  when one-third of the 100-seat chamber will be up for grabs. Tennessee is a solidly Republican state and the party  which currently holds a 52-seat majority in the Senate  is favored to keep his seat.
In his official announcement   Corker  said that âafter much thought  consideration and family discussionâ over the past year  he and his wife Elizabeth âhave decided that I will leave the United States Senate when my term expires at the end of 2018.â
 Sen. Bob Corker (R-TN)  walks away after speaking with reporters after announcing  his  retirement at the conclusion of  his  term on Capitol Hill in Washington  U.S.  September 26  2017. REUTERS/Aaron P. Bernstein
CLASHES WITH  TRUMP
In August  after Trumpâs much-criticized reaction to violence at a white supremacist rally in Virginia   Corker  told reporters in  his  home state Tennessee that Trump had not been able to demonstrate the âstabilityâ or competence that  he  needed to be successful as president.
After the exchange  the two men had an hour-long meeting at the White House this month that  Corker  has described as a wide-ranging and friendly discussion.
 Corker  will remain chairman of the Foreign Relations Committee until he leaves in January 2019. He said he wanted the panel to address issues including Secretary of State Rex Tillersonâs State Department reorganization  food aid reform  and the fight against human trafficking and modern slavery.
 Corker  said the committee would address the international nuclear agreement with Iran  as Trump faces a mid-October deadline for deciding whether to certify that Tehran is complying with that pact. That decision could force Congress to decide whether to reimpose sanctions.  Corker  would not say whether Trump had decided to certify or not.

SOLUTION: Bob Corker

PROBLEM: -LRB- CNN -RRB- Hillary Clinton slammed what she called "endemic" sexism and misogyny in America during an interview with Fareed Zakaria , which aired Sunday . 
Clinton , who was interviewed by Zakaria on his show , "GPS ," said sexism was so inherent that she purposely had n't highlighted her career history of fighting for women 's rights when she ran for president in 2016 .

SOLUTION: Hillary Clinton

PROBLEM: London mayor Sadiq Khan  unveiled  his  âLondon Planâ on Wednesday  and  as expected  it took a tough stance against a dangerous threat jeopardizing the health and future of the cityâs children. No  itâs not a strategy to protect Londoners from potential terrorist attacks at public festivals this Christmas season. The menace is cellulite and the perp is a cheeseburger.
 Khan âs plan would prevent any new fast-food restaurant from opening within 400 meters of a primary or secondary school  fulfilling a campaign pledge  he  made in 2013. The ban targets âtakeawaysâ that sell food such as fish and chips  pizza  chicken  and other quick bites that are allegedly contributing to Londonâs childhood-obesity crisis. (Nearly 40 percent of children in London are overweight or obese by the time they finish grade school  and the number of obese eleven-year-olds in the city spiked by 22 percent in the last four years.)
The mayor is also asking restaurants to make food healthier by using fewer villainous ingredients  and grilling or baking food items instead of frying them: âThe Healthier Catering Commitment is a scheme that helps food businesses in London to provide healthier food to their customers. The scheme promotes a reduction in the consumption of fat  salt and sugar  and an increase in access to fruit and vegetables.â (To  his  credit   Khan  is reportedly trying to stop the number of pubs closing in the city each year. Two cheers for that.)
 Khan âs plan might actually make the problem worse. In 2008  Los Angeles set up new zoning rules that restrict the opening or expansion of âstand aloneâ restaurants in low-income areas of the city to combat health problems in those neighborhoods. But according to a 2015 RAND Corporation study  the rules havenât worked; in fact  after they were implemented  obesity rates for residents living in the targeted neighborhoods grew faster than in other parts of the city: âThe South Los Angeles fast food ban may have symbolic value  but it has had no measurable impact in improving diets or reducing obesity â said Roland Sturm  the lead author of the study. Business owners  who are usually smarter than politicians  figured out a way around the rules by opening smaller food stores or restaurants with limited seating. Shrewd Londoners could find similar loopholes in  Khan âs plan  perhaps by building a new restaurant 420 meters away from a school instead of 400.

SOLUTION:
Sadiq Khan