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].

Example Input: Two recent books look at the very human (sometimes all-too-human) process of trying to make sense of the known universe:  The Un-Discovered Islands: An Archipelago of Myths and Mysteries  Phantoms and Fakes  by Malachy Tallack  and The Planet Factory: Exoplanets and the Search for a Second Earth  by Elizabeth Tasker .  They 're so stylistically and scientifically disparate as to seem unrelated  but reading  them  in close succession makes for something greater than the sum of its parts â a joint atlas of human guesses in a world that seems destined to confound us.
 Elizabeth Tasker  knows all about that; The Planet Factory is all about the formation of worlds humanity might never clap eyes on. And if you're hoping for definitive answers about how things work closer to home  think again;  Tasker 's very clear that the scientific method is as often about being proven wrong. "The problem (and there is always a problem)" isn't just an aside on a particular theory  but a thesis for the field. This is a book about trying to map unknown seas in real time; the ghosts of the sailors peering into the dawn looking for Thule live in every telescopic survey.
The Planet Factory can feel intimidating; certainly you must come to it wanting to know everything there is to know about making planets  and hang in there as long as you can before the variables overwhelm you. ( Tasker  offers easy analogies by the handful  and while at first they may seem too easy  you'll appreciate them by the time you're trying to understand the optimum timing of planetary migration.)
The Planet Factory Exoplanets and the Search for a Second Earth by Elizabeth Tasker Hardcover  336 pages   purchase close overlay Buy Featured Book Your purchase helps support NPR programming. How?
Example Output: Elizabeth Tasker

Example Input: TOKYO (Reuters) -  Japanese Prime Minister Shinzo Abeâs ruling bloc  scored a big win in Sundayâs election  bolstering  his  chance of becoming the nationâs longest-serving premier and re-energizing  his  push to revise the pacifist constitution.
âAnd as we saw in the U.K. ... a referendum could be tricky. So while  Abe  is likely to be prime minister for the time being  it is too early to say whether  he  can stay in power until 2021.â  Abe  declined to say if  he  would run for a third term.
 Abe  had said  he  needed a new mandate to tackle a "national crisis" from North Korea's missile and nuclear threats and a fast-aging population  and to approve  his  idea of diverting revenue from a planned sales tax hike to education and child care from public debt repayment [reut.rs/2yC0pma].
 He  called the poll amid confusion in the opposition camp and an uptick in  his  ratings  dented earlier in the year by scandals over suspected cronyism and a perception  he  had grown arrogant after nearly five years in office.
Example Output: Shinzo Abe

Example Input: Anti-Trump steam rolling from his ears? Check.
Anyway   Trump  was unfazed. Smiled and gave a thumbs up.
Of the 33 questions asked  21 obsessed over infighting among Republicans upset at  Trump .
Remarkably  there was actually one question about the Clinton conspiracy with Russia to give 1/5 of America’s uranium to our greatest nuclear rival. But nothing about the Clinton conspiracy with Russia to dig up dirt on  Trump  during the election.
Example Output:
Anti-Trump