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White House Budget  Director   Rob Portman  said the surge in tax revenues over the past two years was directly related to the economic rebound spurred by the Bush tax cuts .
 title of person: Director, Rob Portman
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 title of person: Director, Rob Portman