37942
On September 14 , 1991 , at a Mr. Olympia contest , he squared off face to face with his greatest rival Anthony Clark to determine who the greatest bench presser of the world was .
 Anthony Clark
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Anthony Clark