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: As U.S. Secretary of State Rex Tillerson visits the Middle East this weekend  he'll hope to achieve something that has eluded top American diplomats for a generation: sealing a new alliance between Saudi Arabia and Iraq that would shut the doors of the Arab world to neighboring Iran.
The effort to wean Iraq from Iran and bond it to Saudi Arabia isn't new  but U.S. officials are optimistically pointing to a surer footing they believe they've seen in recent months. They're hoping to push the improved relations into a more advanced phase Sunday when  Tillerson  participates in the inaugural meeting of the Saudi Arabia-Iraq Coordination Committee in Riyadh.
 Tillerson  will seek Saudi financial generosity and political support for Iraq  its embattled northern neighbor. Two U.S. officials said  Tillerson  hopes the oil-rich Saudis will contribute to the massive reconstruction projects needed to restore pre-IS life in Iraqi cities such as Mosul and lend their backing to Iraqi Prime Minister Haider al-Abadi. He is treading delicately among a host of powerful countries on Iraq's borders which are increasingly trying to shape the future of the ethnically and religiously divided nation.
 Tillerson 's decision to skip that gathering was widely criticized at the time as a sign of disengagement with his employees  but the official said  Tillerson  adjusted plans to speak by secure telephone to Saudi Foreign Minister Adel al-Jubeir on the Iraq rapprochement.

Answer: Rex Tillerson


Question: 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

Answer: Tom Cotton


Question: âThe windscreen phenomenon is probably one of the best illustrative ways to realize we are dealing with a decline in flying insects â said  Caspar Hallmann  an ecologist at Radboud University in the Netherlands .  Hallmann  is part of a research team that recently waded through 27 years' worth of insects collected in German nature preserves.
The most dramatic reduction over time in bug biomass appeared in summer months  when insects should be most active. âApparently  when insect densities are the highest  declines are most severe. Unfortunately we do not know why â  Hallmann  said.
 Hallmann  said the German study should be ârepresentative for parts of the world under similar conditions â which is to say a human-dominated landscape coupled with intensive agriculture. But  he  cannot make more-specific comparisons  because âsimilar data sets do not exist elsewhere  to our knowledge â  he  said.
The authors of the new study attempted to tease out the roots of the decline. The scientists' investigation into climatic changes and other variables  however  eliminated most âprime suspects â  Hallmann  said. (In fact  the temperature increase observed over the study period should have benefited flying insects   he  said.)
One culprit could be the alteration of the landscape itself  the agriculture that surrounds the preserves. âThis suggests a possible role for  for example  fertilizer and pesticide application â  Hallmann  said.

Answer:
Caspar Hallmann