成年 せいねん しゃ飲酒 いんしゅ禁止 きんし ほうだった
miseinenshainshukin shi hōdatta

Noun
Da Copula

The past form of 未成年者飲酒禁止法

1. Underage drinking was prohibited by law.; It was a law prohibiting underage drinking.

Past/Perfective
Law