10775
He was found on the 39th floor in the restroom of the offices of  Richard Mellon Scaife  inside One Oxford Center  Pittsburgh  .
 Richard Mellon Scaife, Pittsburgh
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Richard Mellon Scaife, Pittsburgh