as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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create a list of five famous people from the 20th century and provide a brief description of each one.
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1. albert einstein: albert einstein was a german-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics.
2. nelson mandela: nelson mandela was a south african anti-apartheid revolutionary, political leader and philanthropist who served as the president of south africa from 1994 to 1999. 
3. john f. kennedy: john f. kennedy was an american politician and the 35th president of the united states from 1961 until his assassination in 1963.
4. marilyn monroe: marilyn monroe was an american actress, model and singer who became a major sex symbol in the 1950s and early 1960s.
5. martin luther king jr.: martin luther king jr. was an american baptist minister, activist, humanitarian and leader in the african-american civil rights movement. he is best known for advancing civil rights through nonviolence and civil disobedience, inspiring people around the world.
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