Question:
Which political party did Khieu Samphan belong to in Jun, 1967?

Context:
 Khieu Samphan is a member of the Communist Party of Kampuchea from Jan, 1967 to Jan, 1981. 
 Khieu Samphan is a member of the Sangkum from Jan, 1958 to Jan, 1967. 
 Khieu Samphan is a member of the Party of Democratic Kampuchea from Jan, 1981 to Jan, 1993.

Answer:
Question:
Which political party did Khieu Samphan belong to in Jun, 1967?

Context:
 Khieu Samphan is a member of the Communist Party of Kampuchea from Jan, 1967 to Jan, 1981. 
 Khieu Samphan is a member of the Sangkum from Jan, 1958 to Jan, 1967. 
 Khieu Samphan is a member of the Party of Democratic Kampuchea from Jan, 1981 to Jan, 1993.

Answer:
user
Communist Party of Kampuchea
assistant
Question:
Which political party did Khieu Samphan belong to in Jun, 1967?

Context:
 Khieu Samphan is a member of the Communist Party of Kampuchea from Jan, 1967 to Jan, 1981. 
 Khieu Samphan is a member of the Sangkum from Jan, 1958 to Jan, 1967. 
 Khieu Samphan is a member of the Party of Democratic Kampuchea from Jan, 1981 to Jan, 1993.

Answer:
user
Sangkum
Party of Democratic Kampuchea
assistant
Question:
Which political party did Khieu Samphan belong to in Jun, 1967?

Context:
 Khieu Samphan is a member of the Communist Party of Kampuchea from Jan, 1967 to Jan, 1981. 
 Khieu Samphan is a member of the Sangkum from Jan, 1958 to Jan, 1967. 
 Khieu Samphan is a member of the Party of Democratic Kampuchea from Jan, 1981 to Jan, 1993.

Answer:
user
Communist Party of Kampuchea
assistant