Question:
Who was the head of Kaohsiung County in Apr, 1957?

Context:
 Chen Hsin-an is the head of the government of Kaohsiung County from Jun, 1954 to Jun, 1957. 
 Hsieh Tung-min is the head of the government of Kaohsiung County from Jan, 1946 to Oct, 1947. 
 Tan Kai-heng is the head of the government of Kaohsiung County from Jun, 1957 to Jun, 1960. 
 Yu Chen Yueh-ying is the head of the government of Kaohsiung County from Dec, 1985 to Dec, 1993. 
 Yu Teng-fa is the head of the government of Kaohsiung County from Jun, 1960 to Sep, 1963. 
 Lin Yuanyuan is the head of the government of Kaohsiung County from Jun, 1968 to Dec, 1977. 
 Yu Cheng-hsien is the head of the government of Kaohsiung County from Dec, 1993 to Dec, 2001. 
 Yang Chiu-hsing is the head of the government of Kaohsiung County from Dec, 2001 to Dec, 2010.

Answer:
Question:
Who was the head of Kaohsiung County in Apr, 1957?

Context:
 Chen Hsin-an is the head of the government of Kaohsiung County from Jun, 1954 to Jun, 1957. 
 Hsieh Tung-min is the head of the government of Kaohsiung County from Jan, 1946 to Oct, 1947. 
 Tan Kai-heng is the head of the government of Kaohsiung County from Jun, 1957 to Jun, 1960. 
 Yu Chen Yueh-ying is the head of the government of Kaohsiung County from Dec, 1985 to Dec, 1993. 
 Yu Teng-fa is the head of the government of Kaohsiung County from Jun, 1960 to Sep, 1963. 
 Lin Yuanyuan is the head of the government of Kaohsiung County from Jun, 1968 to Dec, 1977. 
 Yu Cheng-hsien is the head of the government of Kaohsiung County from Dec, 1993 to Dec, 2001. 
 Yang Chiu-hsing is the head of the government of Kaohsiung County from Dec, 2001 to Dec, 2010.

Answer:
user
Chen Hsin-an
assistant
Question:
Who was the head of Kaohsiung County in Apr, 1957?

Context:
 Chen Hsin-an is the head of the government of Kaohsiung County from Jun, 1954 to Jun, 1957. 
 Hsieh Tung-min is the head of the government of Kaohsiung County from Jan, 1946 to Oct, 1947. 
 Tan Kai-heng is the head of the government of Kaohsiung County from Jun, 1957 to Jun, 1960. 
 Yu Chen Yueh-ying is the head of the government of Kaohsiung County from Dec, 1985 to Dec, 1993. 
 Yu Teng-fa is the head of the government of Kaohsiung County from Jun, 1960 to Sep, 1963. 
 Lin Yuanyuan is the head of the government of Kaohsiung County from Jun, 1968 to Dec, 1977. 
 Yu Cheng-hsien is the head of the government of Kaohsiung County from Dec, 1993 to Dec, 2001. 
 Yang Chiu-hsing is the head of the government of Kaohsiung County from Dec, 2001 to Dec, 2010.

Answer:
user
Tan Kai-heng
Yu Chen Yueh-ying
Yang Chiu-hsing
Yu Teng-fa
Yu Cheng-hsien
Hsieh Tung-min
Lin Yuanyuan
assistant
Question:
Who was the head of Kaohsiung County in Apr, 1957?

Context:
 Chen Hsin-an is the head of the government of Kaohsiung County from Jun, 1954 to Jun, 1957. 
 Hsieh Tung-min is the head of the government of Kaohsiung County from Jan, 1946 to Oct, 1947. 
 Tan Kai-heng is the head of the government of Kaohsiung County from Jun, 1957 to Jun, 1960. 
 Yu Chen Yueh-ying is the head of the government of Kaohsiung County from Dec, 1985 to Dec, 1993. 
 Yu Teng-fa is the head of the government of Kaohsiung County from Jun, 1960 to Sep, 1963. 
 Lin Yuanyuan is the head of the government of Kaohsiung County from Jun, 1968 to Dec, 1977. 
 Yu Cheng-hsien is the head of the government of Kaohsiung County from Dec, 1993 to Dec, 2001. 
 Yang Chiu-hsing is the head of the government of Kaohsiung County from Dec, 2001 to Dec, 2010.

Answer:
user
Chen Hsin-an
assistant