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 Input:
Sen. Tom Cotton (R-Ark.) arrives for a weekly Republican Party luncheon at the U.S. Capitol on Jan. 17. (Jonathan Ernst/Reuters).
 Sen. Tom Cotton (R-Ark.)  last week helped kill the bipartisan immigration deal in Congress.  He  didn't think the bill went far enough in transforming the U.S. immigration system. Like President Trump   Cotton  thinks the United States should cut legal immigration. The senator's reasoning?
âIt can't simultaneously be true that robots will take all the jobs & that the West needs millions of new immigrants to do the grunt work â tweeted  Cotton  in late January  quoting a Wall Street Journal op-ed from a conservative commentator.
âI think itâs certainly critical that we reduce unskilled and low-skilled workers. It canât both be true ... that we need both more unskilled and low-skilled workers  but robots are going to take all the jobs â  Cotton  told Vox.
âTom Cotton is woefully misinformed â said Joe Brusuelas  chief economist at RSM. âRobots will create more jobs.â

Ex Output:
Tom Cotton


Ex Input:
WARSAW  Poland (AP) —  A new art exhibition that explores the little-known connections Mexican artists Frida Kahlo and Diego Rivera  had to Poland is bringing works inspired by Mexico's indigenous cultures to a European audience which rarely has the chance to see  them .
 "Frida Kahlo & Diego Rivera . Polish Context" features iconic Kahlo self-portraits and paintings by Rivera alongside works by two Polish-born artists.
 The show  also tells the story of the mysterious disappearance of a Kahlo painting titled "The Wounded Table" after  it  was displayed in Poland in 1955.
One is the photographer Bernice Kolko  who took photos of  Kahlo  during the last years of  her  life  even intimate images of the artist on  her  death bed and at  her  funeral. The other is Fanny Rabel  who was a student of  Kahlo 's and an apprentice to Rivera  becoming one of the first female muralists in Mexico.
CORRECTS SOURCE - Guests attend a preview of a new exhibition on Mexican artists Frida Kahlo and Diego Rivera in Poznan  Poland  on Tuesday Sept. 26  2017.  "Frida Kahlo & Diego Rivera . Polish Context" features iconic Kahlo self-portraits  works by Rivera and the works of two Polish-born artists linked to the couple. It also recalls the mysterious disappearance of a  Kahlo  painting after it was displayed in Poland 62 years ago. (Maciej Kaczyński/CZ ZAMEK via AP)
The paintings on display include several of  Kahlo 's key works  including "Self-portrait with Monkeys" and "Self-Portrait as Tehuana " also known as "Diego in My Thoughts." The painting shows  Kahlo  stuck in a web and with a small portrait of Rivera on  her  forehead  an apparent reference to  her  long obsession with the husband who betrayed  her  with other women.

Ex Output:
Frida Kahlo


Ex Input:
This frame grab from a video released on Nov. 2  2017 by the Syrian official news agency SANA shows  a Syrian army tank firing during a battle against Islamic State militants in Deir el-Zour  Syria .  The Syrian army  announced on Friday  Nov. 3  it  liberated  the long-contested eastern city of Deir el-Zour  from the Islamic State group. (SANA via AP) (Associated Press)
DAMASCUS  Syria â  The Syrian army  announced on Friday  it  liberated  the long-contested eastern city of Deir el-Zour  from the Islamic State group  marking another defeat of the extremists as their self-proclaimed âcaliphateâ crumbles and almost all their urban strongholds in Syria and Iraq have been lost.
The recapture of  Deir el-Zour  on the west bank of the Euphrates River is also another victory for President Bashar Assadâs forces  though largely symbolic in the Syrian militaryâs bigger fight to capture most of the oil-rich province along the border with Iraq.
Deir el-Zour  which had been divided into a government-held and an IS-held part for nearly three years  is the largest city in eastern Syria and the capital of the province with the same name. It is also the largest to be recaptured by the Syrian government from IS.
The Syrian army  backed by Russia and Iran  and Kurdish-led Syrian forces  backed by the United States  are now racing to take the rest of the oil-rich eastern province of Deir el-Zour  including the key town of Boukamal near the Iraqi border.
Footage posted on the website of the Syrian state news agency SANA shows the last moments of the fighting between the Syrian army and IS in Deir el-Zour  including shelling by Syrian tanks and plumes of smoke rising over the cityâs IS-held and mostly destroyed neighborhoods of Jamiayat and Jabiliyeh before they were liberated.

Ex Output:

Deir el-Zour