Definition: Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Positive Example 1 -
Input: Which writer rode Devon Loch in the 1956 Grand National?
Output: dick francis

Positive Example 2 -
Input: The 1950 FIFA World Cup was held in which country?
Output: brazil

Negative Example 1 -
Input: In which US town or city were the 1932 Winter Olympics held?
Output: The 1932 Winter Olympics was hosted at Lake Placid.

Negative Example 2 -
Input: Who directed the 2010 film 127 Hours?
Output: James Cameron

Now complete the following example -
Input: Who led the 1955 Montgomery Bus Boycott, co-founded the Southern Christian Leadership Conference in 1957, led the 1963 March on Washington and, in 1964, became the youngest person to receive the Nobel Peace Prize for his work to end segregation and racial discrimination through civil disobedience and other non-violent means?
Output: 

martin luther king, jr.