5643
 At the same time , with somewhat less attention , studies at the Harbor-U.C.L.A. Medical Center and the University of Arizona , Tucson , have focused on the therapeutic potential of psilocybin the active ingredient in '' magic mushrooms '' . 
 location contains: Tucson, University of Arizona
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:  Tucson, University of Arizona 
Answer:
 location contains: Tucson, University of Arizona