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].

Input: Consider Input: Sheikh Ahmad  who is tasked with implementing the plan  said 25 percent of projects outlined in the first year have been completed and that 40-50 percent more should be done before the end of the fiscal year in March.
 "We have already committed to 3.2 billion dollars worth of projects out of the planned 17.7 billion dollars " he said.
 Mega-projects outlined in the plan include a 25-kilometre (15 miles) causeway  two power stations  four housing cities  a modern container harbour and a huge hospital  the minister said.
Sheikh Ahmad added.
 Sheikh Ahmad said his ministry has already received requests from other ministries and government institutions for 1 100 projects worth 25 billion dollars for the second year of the plan.

Output: Sheikh Ahmad


Input: Consider Input: Sam Querrey gave the United States a winning start in its bid to reach Saturday's final at the World Team Cup.
 Querrey beat Jan Hajek 6-3  7-5 on Thursday to put the U.S. 1-0 up against the Czech Republic in the Red Group and remain unbeaten in his three singles this week.
 "So far so good " said Querrey. "I thought today was the best I played out of the three matches. So I'm pretty excited."
 Hajek claimed the first break  when Querrey ended a long rally with a forehand error  to go 3-1 up but the American player responded by winning the next five games in a row to take the opening set.
 Both players saved a break point late in the second set before Querrey broke at 6-5  converting his third match point.
 "I've been working this week to try and hit my forehand a little bigger. I felt I did that today " said Querrey. "I felt pretty much anytime I got a forehand  I was able to take control of the point."
 Querrey said his win takes the pressure off the U.S. ahead of Friday's matches.
 "A little bit  yes. I think John (Isner) can go out there and play a little more freely  which is a good thing " Querrey said. "When we have the lead  you can swing away a little bit more than if we were 1-0 down.
 "Then  the Bryan brothers  we expect them to win every match. Hopefully  they are going to do that again."

Output: Sam Querrey


Input: Consider Input: Lionel Messi and Luis Suarez left Madrid staring at a 14-point deficit after leading Barcelona to a 3-0 win at the Santiago Bernabeu on Saturday.
Suarez struck in the 54th minute and  Messi  added a penalty 10 minutes later after Madrid's Dani Carvajal received a direct red for stopping a goal-bound header by Paulinho.
 Messi  also set up substitute Aleix Vidal to round off the commanding win in stoppage time.
Despite the standings  Barcelona coach Ernesto Valverde and  his  players aren't excluding a Madrid comeback.
 Barcelona's Lionel Messi  2nd right   celebrates after scoring  his  side's second goal during the Spanish La Liga soccer match between Real Madrid and Barcelona at the Santiago Bernabeu stadium in Madrid  Spain  Saturday  Dec. 23  2017. (AP Photo/Francisco Seco)
The match was a contrast in tempos: Madrid wanted a frantic  up-and-down shootout  with Cristiano Ronaldo having space to roam  while Barcelona wanted to hold the ball and let  Messi  pick  his  moments.
Ronaldo beat  Messi  for the Ballon d'Or this month but the Portuguese failed to make a decisive impact on Saturday as  Messi  took  his  clasico record to 25 goals in 37 matches and  his  season-leading tally to 15 in the league.
 Zidane  left Spain midfielder Francisco "Isco" Alarcon on the bench in a surprise move. Instead   he  gave Mateo Kovacic  his  first league start of the season  hoping to repeat  his  success from the Spanish Super Cup where the Croatian was charged with man-marking Messi.
 Messi  seized the moment by playing Suarez clear. After Suarez hit the post  Carvajal blatantly used  his  arm to stop Paulinho's header from going in — a decision that earned  him  a direct red card and sent  Messi  to the penalty spot to fire  his  strike in.
Trying to spark a comeback   Zidane  sent on forwards Marco Asensio and Gareth Bale  who drew a save from Ter Stegen.
But it was  Messi  who  despite losing  his  right boot to Marcelo's tackle  reached the endline before finding Vidal to cap the win  as Barcelona won a third straight league visit at Madrid for the first time in their long rivalry.


Output: Lionel Messi