52558
Rhayun Song , the senior author on the study and an assistant professor of nursing at Chungnam National University in Daejeon , South Korea , said that keeping joints and muscles moving was essential for older people , and that '' tai chi can do it without causing pain and stiffness since it 's slow circular movements without external impact . ''
 location contains: South Korea, Daejeon; country of administrative divisions: South Korea, Daejeon; location contains: Daejeon, Chungnam National University; administrative division of country: Daejeon, South Korea
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  South Korea, Daejeon; South Korea, Daejeon; Daejeon, Chungnam National University; Daejeon, South Korea 
Answer:
 location contains: South Korea, Daejeon; country of administrative divisions: South Korea, Daejeon; location contains: Daejeon, Chungnam National University; administrative division of country: Daejeon, South Korea