TASK DEFINITION: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
PROBLEM: The International Boxing Federation , or " IBF " , is one of many organizations which sanction world championship boxing bouts , alongside the WBA , WBC , WBO , and a dozen or so others .

SOLUTION: The International Boxing Federation ( IBF ) is one of four major organizations recognized by the International Boxing Hall of Fame ( IBHOF ) which sanction world championship boxing bouts , alongside the World Boxing Association ( WBA ) , World Boxing Council ( WBC ) and World Boxing Organization ( WBO ) .

PROBLEM: It is the only tower to be in the fire zone to survive .

SOLUTION: The tower was the only public building in the burned zone to survive , and is one of just a few of the surviving structures still standing .

PROBLEM: This was when it reached number one on the Hot Adult Top 40 Tracks chart in May 2011 .

SOLUTION:
Later on , it became her first ever single to top a " Billboard " chart when it reached number one on the Hot Adult Top 40 Tracks chart in May 2011 , and became her first number one hit in the country when it topped the " Billboard " Hot 100 in May 2011 .