Question:
Who was the chair of Palestine Liberation Organization in May, 1986?

Context:
 Ahmad Shukeiri is the chair of Palestine Liberation Organization from Jun, 1964 to Dec, 1967. 
 Mahmoud Abbas is the chair of Palestine Liberation Organization from Oct, 2004 to Dec, 2022. 
 Yasser Arafat is the chair of Palestine Liberation Organization from Feb, 1969 to Nov, 2004. 
 Yahya Hammuda is the chair of Palestine Liberation Organization from Dec, 1967 to Feb, 1969.

Answer:
Question:
Who was the chair of Palestine Liberation Organization in May, 1986?

Context:
 Ahmad Shukeiri is the chair of Palestine Liberation Organization from Jun, 1964 to Dec, 1967. 
 Mahmoud Abbas is the chair of Palestine Liberation Organization from Oct, 2004 to Dec, 2022. 
 Yasser Arafat is the chair of Palestine Liberation Organization from Feb, 1969 to Nov, 2004. 
 Yahya Hammuda is the chair of Palestine Liberation Organization from Dec, 1967 to Feb, 1969.

Answer:
user
Yasser Arafat
assistant
Question:
Who was the chair of Palestine Liberation Organization in May, 1986?

Context:
 Ahmad Shukeiri is the chair of Palestine Liberation Organization from Jun, 1964 to Dec, 1967. 
 Mahmoud Abbas is the chair of Palestine Liberation Organization from Oct, 2004 to Dec, 2022. 
 Yasser Arafat is the chair of Palestine Liberation Organization from Feb, 1969 to Nov, 2004. 
 Yahya Hammuda is the chair of Palestine Liberation Organization from Dec, 1967 to Feb, 1969.

Answer:
user
Yahya Hammuda
Ahmad Shukeiri
Mahmoud Abbas
assistant
Question:
Who was the chair of Palestine Liberation Organization in May, 1986?

Context:
 Ahmad Shukeiri is the chair of Palestine Liberation Organization from Jun, 1964 to Dec, 1967. 
 Mahmoud Abbas is the chair of Palestine Liberation Organization from Oct, 2004 to Dec, 2022. 
 Yasser Arafat is the chair of Palestine Liberation Organization from Feb, 1969 to Nov, 2004. 
 Yahya Hammuda is the chair of Palestine Liberation Organization from Dec, 1967 to Feb, 1969.

Answer:
user
Yasser Arafat
assistant