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.
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Question: Which British engineer designed the Forth Bridge and the original Aswan Dam?

Answer: benjamin baker


Question: Of the five Marx brothers who appeared on film, who was the oldest ?

Answer: chico


Question: Michael Phelps who during the Summer Olympics 2012 brought his swimming medal total to a record 18 golds represents which country?

Answer:
united states