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].

[Q]: SACRAMENTO  Calif. (Reuters) -  A California neuroscientist vying to unseat Republican Congressman Dana Rohrabacher  stepped up  his  criticism of the conservative on Tuesday  demanding  he  return a $1 000 contribution from indicted Trump adviser Paul Manafort.
FILE PHOTO:  Republican U.S. Representative Dana Rohrabacher  speaks at a news conference in Moscow  Russia on June 2  2013. REUTERS/Maxim Shemetov/File Photo
The Orange County seat held by  Rohrabacher  is key to Democratsâ hopes to increase their numbers in the U.S. House of Representatives in next yearâs elections. Neuroscientist Hans Keirstead  a stem cell researcher and entrepreneur from Laguna Beach  is one of seven Democrats aiming to beat him  according to the Federal Election Commission.
 Rohrabacher   a senior member of the House Committee on Foreign Affairs  has frequently praised Russian President Vladimir Putin and was considered for a role in U.S. President Donald Trumpâs cabinet.
FILE PHOTO: U.S. Rep. Dana Rohrabacher (R-CA) speaks during a House Foreign Affairs Europe  Eurasia and Emerging Threats Subcommittee hearing about the attack on demonstrators by members of Turkish President Recep Tayyip Erdogan's security detail on Capitol Hill in Washington  DC  U.S. on May 25  2017. REUTERS/Aaron P. Bernstein/File Photo
[A]: Dana Rohrabacher


[Q]: Despite their hard-line  open borders demands  Senate Democrats  Flake  and Graham knew the terms of an immigration deal with the White House  as the  Trump  administration has said for months that no deal would be made unless legal immigration levels were reduced to raise the wages of American workers and full funding for the border wall along the U.S.-Mexico border was handed over.
Senate Democrats  Flake  and Graham have been unwilling to stray from their âGang of Sixâ amnesty plan and thus have attempted to blame  Trump  and senior adviser Stephen Miller for the shutdown  despite the terms of an immigration agreement remaining unchanged for months.
The Democrats are turning down services and security for citizens in favor of services and security for non-citizens. Not good! â Donald J. Trump (@realDonaldTrump) January 22  2018
Democrats have shut down our government in the interests of their far left base. They donât want to do it but are powerless! â Donald J. Trump (@realDonaldTrump) January 22  2018
[A]: Donald J. Trump


[Q]: Washington (CNN) Cuban Foreign Minister Bruno Rodriguez Parrilla said today that the United States has provided no evidence for its claims that US diplomats in Havana have come under deliberate sonic attack  and raised the question of whether the Trump administration is using the diplomats' injuries to unwind recent progress in creating closer ties.
"There is no evidence  there is no evidence whatsoever  of the occurrence of the alleged incidents or the cause or origin of these ailments reported by US diplomats "  Rodriguez Parrilla  said today in Washington. "Neither is there any evidence suggesting that these health problems have been caused by an attack of any sort during their stay in Cuba."
"These health problems are being used as a pretext of a political character ... to harm bilateral relations "  Rodriguez Parrilla  said at a press conference at the National Press Club. "The US government should stop politicizing this issue."
 The Cuban minister  said that the United States hasn't provided  his  government with any proof to substantiate President Donald Trump's statement that Cuba is to blame for medical problems suffered by more than 22 US diplomats and family members  some of whom have reportedly suffered brain injuries.
 Rodriguez Parrilla  also slammed Trump for  his  rhetoric about the island nation  citing the "repeated disrespectful and offensive statements on Cuba by the US president." Trump's rhetoric is responsible for "re-launching the hostile rhetoric of the periods of sharpest confrontation "  he  said.
 He  added that anyone who claims the diplomats' health problems are the result of an attack is "deliberately lying."
[A]:
Bruno Rodriguez Parrilla