Question:
Who was the head of Ehime Prefecture in Jan, 1978?

Context:
 Shigetomi Aoki is the head of the government of Ehime Prefecture from Apr, 1947 to Apr, 1951. 
 Sadayuki Iga is the head of the government of Ehime Prefecture from Jan, 1987 to Jan, 1999. 
 Moriyuki Kato is the head of the government of Ehime Prefecture from Jan, 1999 to Nov, 2010. 
 Sadatake Hisamatsu is the head of the government of Ehime Prefecture from May, 1951 to Jan, 1971. 
 Tokihiro Nakamura is the head of the government of Ehime Prefecture from Dec, 2010 to Dec, 2022. 
 Haruki Shiraishi is the head of the government of Ehime Prefecture from Jan, 1971 to Jan, 1987.

Answer:
Question:
Who was the head of Ehime Prefecture in Jan, 1978?

Context:
 Shigetomi Aoki is the head of the government of Ehime Prefecture from Apr, 1947 to Apr, 1951. 
 Sadayuki Iga is the head of the government of Ehime Prefecture from Jan, 1987 to Jan, 1999. 
 Moriyuki Kato is the head of the government of Ehime Prefecture from Jan, 1999 to Nov, 2010. 
 Sadatake Hisamatsu is the head of the government of Ehime Prefecture from May, 1951 to Jan, 1971. 
 Tokihiro Nakamura is the head of the government of Ehime Prefecture from Dec, 2010 to Dec, 2022. 
 Haruki Shiraishi is the head of the government of Ehime Prefecture from Jan, 1971 to Jan, 1987.

Answer:
user
Haruki Shiraishi
assistant
Question:
Who was the head of Ehime Prefecture in Jan, 1978?

Context:
 Shigetomi Aoki is the head of the government of Ehime Prefecture from Apr, 1947 to Apr, 1951. 
 Sadayuki Iga is the head of the government of Ehime Prefecture from Jan, 1987 to Jan, 1999. 
 Moriyuki Kato is the head of the government of Ehime Prefecture from Jan, 1999 to Nov, 2010. 
 Sadatake Hisamatsu is the head of the government of Ehime Prefecture from May, 1951 to Jan, 1971. 
 Tokihiro Nakamura is the head of the government of Ehime Prefecture from Dec, 2010 to Dec, 2022. 
 Haruki Shiraishi is the head of the government of Ehime Prefecture from Jan, 1971 to Jan, 1987.

Answer:
user
Shigetomi Aoki
Tokihiro Nakamura
Sadayuki Iga
Moriyuki Kato
Sadatake Hisamatsu
assistant
Question:
Who was the head of Ehime Prefecture in Jan, 1978?

Context:
 Shigetomi Aoki is the head of the government of Ehime Prefecture from Apr, 1947 to Apr, 1951. 
 Sadayuki Iga is the head of the government of Ehime Prefecture from Jan, 1987 to Jan, 1999. 
 Moriyuki Kato is the head of the government of Ehime Prefecture from Jan, 1999 to Nov, 2010. 
 Sadatake Hisamatsu is the head of the government of Ehime Prefecture from May, 1951 to Jan, 1971. 
 Tokihiro Nakamura is the head of the government of Ehime Prefecture from Dec, 2010 to Dec, 2022. 
 Haruki Shiraishi is the head of the government of Ehime Prefecture from Jan, 1971 to Jan, 1987.

Answer:
user
Haruki Shiraishi
assistant