Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.
Example: Passage: Martin Luther married Katharina von Bora, one of 12 nuns he had helped escape from the Nimbschen Cistercian convent in April 1523, when he arranged for them to be smuggled out in herring barrels. Suddenly, and while I was occupied with far different thoughts, he wrote to Wenceslaus Link, “the Lord has plunged me into marriage. At the time of their marriage, Katharina was 26 years old and Luther was 41 years old. Question: In a letter who did Luther credit for his union with Katharina?
Example solution: the Lord
Example explanation: The paragraph clearly states that, Luther has credited the Lord for his union with Katharina, hence the Lord is correct answer.

Problem: Passage: In economics, notable Nobel Memorial Prize in Economic Sciences winners Milton Friedman, a major advisor to Republican U.S. President Ronald Reagan and Conservative British Prime Minister Margaret Thatcher, George Stigler, Nobel laureate and proponent of regulatory capture theory, Gary Becker, an important contributor to the family economics branch of economics, Herbert A. Simon, responsible for the modern interpretation of the concept of organizational decision-making, Paul Samuelson, the first American to win the Nobel Memorial Prize in Economic Sciences, and Eugene Fama, known for his work on portfolio theory, asset pricing and stock market behaviour, are all graduates. American economist, social theorist, political philosopher, and author Thomas Sowell is also an alumnus. Question: Who was the first American to win the Nobel Memorial Prize in Economic Sciences?

Solution: Paul Samuelson