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Lawrence Bruce Hayes ( born March 8 , 1963 ) is an American former competition swimmer best known for anchoring the U.S. men 's 4x200-meter freestyle relay team that won the gold medal at the 1984 Summer Olympics in Los Angeles .
 Bruce Hayes, Los Angeles
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bruce Hayes, Los Angeles