4900
Khmer Rouge leader Khieu Samphan reportedly made a number of objections on conference organization and procedure but then went along with the majority after Chinese Foreign Qian Qichen met with Monday with him , Sihanouk and the third member of their loose alliance , Son Sann.
 Khieu Samphan, Khmer Rouge
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: Organization based in, Located in, Live in, Work for, Kill 
Text: {0} 
Answer:
 Khieu Samphan, Khmer Rouge