Detailed Instructions: Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.
See one example below:
Problem: Paragraph: Nix v. Hedden , 149 U.S. 304 ( 1893 ) , was a decision by the Supreme Court of the United States that , under U.S. customs regulations , the tomato should be classified as a vegetable rather than a fruit . The Court 's unanimous opinion held that the Tariff Act of 1883 used the ordinary meaning of the words '' fruit '' and '' vegetable , '' instead of the technical botanical meaning .
Question: is tomato a fruit or vegetable us supreme court

Solution: vegetable
Explanation: The answer 'vegetable' is correct as it lies in the sentence - "Nix v. Hedden , 149 U.S. 304 ( 1893 ) , was a decision by the Supreme Court of the United States that , under U.S. customs regulations , the tomato should be classified as a vegetable rather than a fruit ", which is a part of the passage.

Problem: Paragraph: In the history of the Triple Crown , 13 horses have won all three races : Sir Barton ( 1919 ) , Gallant Fox ( 1930 ) , Omaha ( 1935 ) , War Admiral ( 1937 ) , Whirlaway ( 1941 ) , Count Fleet ( 1943 ) , Assault ( 1946 ) , Citation ( 1948 ) , Secretariat ( 1973 ) , Seattle Slew ( 1977 ) , Affirmed ( 1978 ) , American Pharoah ( 2015 ) , and Justify ( 2018 ) . As of 2018 , American Pharoah and Justify are the only living Triple Crown winners .
Question: what was the last horse to win the triple crown

Solution:
Justify