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8 P.M. -LRB- HBO -RRB- A FATHER ... A SON ... ONCE UPON A TIME IN HOLLYWOOD -- Apparently Kirk Douglas -LRB- far right -RRB- is still a little annoyed that Michael Douglas , his own son , did n't give him the lead role in the film '' One Flew Over the Cuckoo 's Nest '' 30 years or so ago .
 children: Kirk Douglas, Michael Douglas
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:  Kirk Douglas, Michael Douglas 
Answer:
 children: Kirk Douglas, Michael Douglas