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].
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Question: BRUSSELS/FRANKFURT (Reuters) - The European Central Bank will only stop pumping cash into the euro zone economy when it is confident that inflation is heading toward its target even without its extra help   the ECBâs chief economist Peter Praet  said on Monday.
Praet  one of the architects and sponsors of the ECBâs 2.55 trillion-euro ($3.17 trillion) bond-buying program  was responding to growing calls by some rate-setters to stop the scheme  which has been blamed for fuelling bubbles in the property and bond markets.
 Praet  said that before making any such decision the ECB needed to be confident that inflation was trending toward its inflation target of almost 2 percent and that it could withstand a withdrawal of stimulus.
âOnce the Governing Council judges that the three criteria for sustained adjustment have been met  net asset purchases will expire  in line with our guidance â  Praet  told an event in Brussels.
 He  also added the ECB had not decided yet how to end the asset purchase program  whether gradually or at once.
Asset purchases âcan expire at once or they can expire in a more gradual way. I think this is still one of the things the Governing Council has to discuss â  he  said.
âEven if incoming data were to validate the expectation of a gradual build-up of inflationary pressures  this would not be sufficient to affirm a sustained adjustment  if even less supportive monetary policy conditions were to imperil the inflation trajectory  Praet said.

Answer: Praet


Question: Bitcoin's price has fully recovered from  its  recent slump after  JPMorgan CEO Jamie Dimon  called it a fraud and Chinese regulators cracked down on exchanges.
The cryptocurrency had a drawdown of up to 14% in the 10 days after September 12  when  Dimon  compared it to the tulip bubble of the 1600s and vowed to fire traders who used it.
By Thursday  bitcoin had all of the losses. It was up nearly 2% from the lows on the day  Dimon  spoke  at $4157.31 per coin at 10:28 a.m. ET.
The move illustrates bitcoin's wild volatility; it's gained 331% this year  unheard of for any major currency and most financial assets. It also shows why many Wall Street professionals like  Dimon  don't see it as a legitimate store of value but as a speculative instrument.

Answer: Jamie Dimon


Question: CLOSE On Saturday   Roger Bannister   the first man to run a sub four-minute mile  died at age 88. Time
 Roger Bannister  breaks the 4-minute mile in 3 minutes  59.4 seconds on May 6  1954. (Photo: Getty Images  Getty Images)
LONDON â  Roger Bannister   the first runner to break the 4-minute barrier in the mile  has died.  He  was 88.
 Bannister âs family said in a statement that  he  died peacefully on Saturday in Oxford  the English city where the runner cracked the feat many had thought humanly impossible on a windy afternoon in 1954.
Helped by two pacemakers   Bannister  clocked 3 minutes  59.4 seconds over four laps at Oxfordâs Iffley Road track on May 6  1954  to break the 4-minute mile â a test of speed and endurance that stands as one of the defining sporting achievements of the 20th century.
âItâs amazing that more people have climbed Mount Everest than have broken the 4-minute mile â  Bannister  said in an interview with The Associated Press in 2012.
âIt became a symbol of attempting a challenge in the physical world of something hitherto thought impossible â  Bannister  said as  he  approached the 50th anniversary of the feat. âIâd like to see it as a metaphor not only for sport  but for life and seeking challenges.â
 He  might not have set the milestone but for the disappointment of finishing without a medal in the 1 500 meters  known as the metric mile  in the 1952 Olympics in Helsinki. Instead of retiring from the sport   he  decided to chase the 4-minute mark.
âAs it became clear that somebody was going to do it  I felt that I would prefer it to be me â  Bannister  told the AP.
 He  also wanted to deliver something special for  his  country.
âI thought it would be right for Britain to try to get this â  Bannister  said. âThere was a feeling of patriotism. Our new queen had been crowned the year before  Everest had been climbed in 1953. Although I tried in 1953  I broke the British record  but not the 4-minute mile  and so everything was ready in 1954.â
 His  chance finally came on a wet  cool  blustery May afternoon during a meet between Oxford and the Amateur Athletic Association.
When  Bannister  looked up at the English flag whipping in the wind atop a nearby church   he  feared  he  would have to call off the record attempt. But  shortly before 6 p.m.  the wind died down. The race was on.
With Chris Brasher setting the pace on the cinder track  they ran a first lap in 57.5 seconds  then 60.7 â 1:58.2 for the half mile. Chris Chataway  a distance specialist  paced a third lap of 62.3 â 3:00.4.  Bannister  would need to run the final lap in 59 seconds.
With 250 yards to go   Bannister  surged past Chataway   his  long arms and legs pumping and  his  lungs gasping for oxygen.
âThe world seemed to stand still  or did not exist â  he  wrote in  his  book  âThe First Four Minutes.â

Answer:
Roger Bannister