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].

[EX Q]: Trump took to Twitter on Tuesday to claim that Tennessee Republican helped "give us" the nuclear deal with Iran negotiated by President Barack Obama's administration. Earlier this month  he claimed that  Corker  is "largely responsible for the horrendous Iran Deal!"
 Corker  the chairman of the Senate Foreign Relations Committee   was in fact a vehement critic of the deal that emerged from international negotiations in the summer of 2015. After the deal was unveiled   he  wrote in an op-ed for The Washington Post that "Congress should reject this deal and send it back to the President."
 Corker  plotted efforts to block the deal  banding with Republicans -- and even some Democrats -- in an attempt to block the deal.
The following month   Corker  did just that  joining with the bipartisan group to vote against the deal. A procedural vote to move forward a resolution to reject the nuclear deal fell shy of the required 60-vote threshold.
Even before that vote   Corker  helped push through the legislation that would ultimately grant Congress powers to review the deal  which the Obama administration contemplated approving without congressional oversight.
 Corker  said such an attempt would be "a direct affront to the American people and seeks to undermine Congress' appropriate role" in a March 2015 letter to Obama.
 Corker 's calls for congressional review of the nuclear deal that was still being negotiated in the spring of 2015 ultimately led to the Iran Nuclear Agreement Review Act  which Obama ultimately signed despite initially opposing the measure.
That could be what White House press secretary Sarah Sanders was referring to on October 10 when she claimed: " Sen. Corker  worked with Nancy Pelosi and the Obama administration to pave the way for that legislation and basically rolled out the red carpet for the Iran deal  and those are pretty factual."
 Corker  defended the bill against that criticism in September 2015  noting that the legislation "actually took power back from the president."
"Without it  he could have unilaterally implemented the deal immediately. The President never would have been forced to submit the agreement to Congress and there would have been no review and no debate on this critical national security issue "  Corker  said then.
Trump's criticism of  Corker  on the Iran deal is also curious given that Trump initially considered  Corker  as a candidate for vice president and later secretary of state  in large part due to his foreign policy chops.
[EX A]: Corker

[EX Q]: and Ted Cruz -LRB- R-Texas -RRB- seem more libertines than libertarians .
[EX A]: Ted Cruz

[EX Q]: Mahan matched the 18-hole course record of eight-under 62 set in Thursday's opening round by fellow American Anthony Kim to seize the clubhouse lead on 268 with Tiger still on the prowl and stalking Hunter across the back nine.
 "I don't know what golf course he was playing. I didn't see a 62 out there " Woods said. "He put so much pressure on us. We had to play really well. There was a lot of heat back there."
 Woods still shared the lead entering the par-5 16th  where he sent his tee shot into the left rough  put his approach into the right greenside rough and left his chip 20 feet short of the cup.
 Mahan made three birdies on the front nine and had runs of three birdies in four holes to begin and end the back nine  taking his lone bogey at 14 and dropped a 15-foot birdie putt on the 18th to keep the pressure on Woods.
 Woods was on his nemesis hole  the par-4 11th. He found weeds and a ditch off the tee and sank a clutch five-foot putt to salvage a bogey  falling into a tie for the lead with Mahan where he stayed until the critical birdie at 16.
 The week's five-over par showing by Woods at the 489-yard 11th matched the worst hole for Woods in any non-major tournament in his career  a dubious mark set at Kapalua's first hole in the 2002 Mercedes Championship.
 Mahan  whose only US PGA title came at the 2007 Travelers Championship  shared fourth at last week's Travelers and sixth two weeks ago at the US Open.
 "I rolled in some putts " Mahan said. "The first three days were a little ugly. I swung great all week but today the putting was great. I'm just really proud of the way I finished."
[EX A]:
Hunter Mahan