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 Q]: The winner of this year's Nobel Prize in economics says  he 's "nervous" about stocks.
"We seem to be living in the riskiest moment of our lives  and yet the stock market seems to be napping  " Richard Thaler  who won the prize for his contributions to behavioral economics   told Bloomberg TV on Tuesday. "I admit to not understanding it."
"I donât know about you  but Iâm nervous  and it seems like when investors are nervous  theyâre prone to being spooked "  he  said  adding that "nothing seems to spook the market."
 Thaler  was awarded the 2017 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel on Monday.
[EX A]: Richard Thaler

[EX Q]: “Initially there is a high number of players and then over time consolidation happens ”  Klaus Helmrich  said on Wednesday at the launch of a global user organization for Siemens’ MindSphere platform  which competes with General Electric’s Predix and others to help customers gather data from machines.
“I don’t think we will end up with one platform worldwide. There will be a handful or two handfuls in the mid to more distant future ”  Helmrich  said  comparing the proliferation of industrial software platforms with the smartphone industry  which has ended up being dominated by Apple and Samsung.
Siemens already has more than 800 000 intelligent sensors in buildings and machines  including trains and healthcare equipment  putting it in a strong position   Helmrich  said.
“It is a solid basis for the start of the business and makes us optimistic about scale effects ”  he  said  adding that being first to gather a critical mass of software developers and users is crucial to winning customers  much as Apple’s large developer community made its app store the most attractive.
[EX A]: Klaus Helmrich

[EX Q]: The groups  known as the Broadway Triangle Community Coalition  wrote to land  use chair David Greenfield  demanding that  he  recuse  himself  from considering the project because  he âs set to leave office and take over the Metropolitan Council on Jewish Poverty.
But  Greenfield (D-Brooklyn)  says the Met Council has nothing to do with the plan  and opponents are just targeting  him  because  he âs Jewish.
âYour behavior thus far is both professionally irresponsible and reckless  and has compromised your participation as an elected representative in this legislative process. The conflicts of interest raised by your involvement in the present Council action are numerous and unwaivable â coalition chair Juan Ramos wrote to  Greenfield .
âThe letter is part of a clear and calculated campaign of intimidation and continued misinformation by the opponents of this private application â  Greenfield  said  saying group leaders have a history of âanti-Semitic remarksâ that âcalls into question the true motivation of this group.â
âIt's telling that this group did not ask Council Member Antonio Reynoso  a member of both the subcommittee and committee  to recuse himself and instead focused on the obviously Jewish council member. This kind of race-baiting politics is disgusting and shameful and has no place in New York City's land use decisions â  Greenfield  said  adding  he  had cleared the issue with the city Conflicts of Interest Board.
The letter complains  Greenfield  answered legitimate concerns about potential discrimination  which opponents say will exacerbate a long history of racial segregation in the neighborhood  with âridicule  racebaiting and derision.â
Needelman  like  Greenfield   is an Orthodox Jew  and said the allegation of anti-Semitism is absurd.
[EX A]:
David Greenfield