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Presidential Decision Directive 62 ( PDD-62 ) , titled Combating Terrorism , was a Presidential Decision Directive ( PDD ) , signed on May 22 , 1998 by President Bill Clinton .
 Bill Clinton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bill Clinton