518
Competitor  UnitedHealth Group  Inc. said last week its second-quarter profit more than doubled compared to the same quarter last year when legal charges weighed down the  Minnetonka  Minnesota insurer's performance .
 city of headquarters: UnitedHealth Group, Minnetonka
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: UnitedHealth Group, Minnetonka