Question:
Which political party did Kōichirō Genba belong to in Apr, 1992?

Context:
 Kōichirō Genba is a member of the Liberal Democratic Party from Jan, 1991 to Jan, 1993. 
 Kōichirō Genba is a member of the Group of Independents from Apr, 2018 to Jan, 2019. 
 Kōichirō Genba is a member of the Democratic Party from Mar, 2016 to Apr, 2018. 
 Kōichirō Genba is a member of the Democratic Party of Japan from Sep, 1996 to Jan, 2015. 
 Kōichirō Genba is a member of the Reviewing Group on Social Security Policy from Jan, 2019 to Sep, 2020. 
 Kōichirō Genba is a member of the New Party Sakigake from Dec, 1993 to Sep, 1996. 
 Kōichirō Genba is a member of the Constitutional Democratic Party of Japan from Sep, 2020 to Dec, 2022. 
 Kōichirō Genba is a member of the independent politician from Jan, 1993 to Nov, 1993.

Answer:
Liberal Democratic Party