6986
Mercer attended Oklahoma State University  Stillwater  where he played baseball for the  Oklahoma State Cowboys  baseball team in the Big 12 Conference .
 city of headquarters: Stillwater, Oklahoma State Cowboys
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:
 city of headquarters: Stillwater, Oklahoma State Cowboys