2872
Upon returning to  Antwerp  after a stay of three years he became a frequent collaborator with  Peter Paul Rubens  until 1620 .
 cities of residence: Antwerp, Peter Paul Rubens
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:
 cities of residence: Antwerp, Peter Paul Rubens