18230
 Set largely during the years of the Soviet occupation and control of Czechoslovakia , where the British-educated Mr. Stoppard was born , '' Rock 'n' Roll '' follows the entwined fortunes of Max Brian Cox , a Cambridge professor and devout member of the Communist Party , and his student disciple , Jan Rufus Sewell , a Czechoslovak who leaves Cambridge for Prague in 1968 in response to the arrival of Soviet tanks . 
 country capital: Czechoslovakia, Prague
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:  Czechoslovakia, Prague 
Answer:
 country capital: Czechoslovakia, Prague