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 When he was in his 70 's , his work began to be noticed again after being championed by Bonnie Grad , an art professor at Clark University in Worcester , Mass. , who saw some of his paintings in the 1980 's and helped organized new exhibitions . 
 location contains: Worcester, Clark University
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Worcester, Clark University 
Answer:
 location contains: Worcester, Clark University