YOU SAID:

a tree was on a bee drinking a gallon of tea

INTO JAPANESE

一ガロンのお茶を飲んでいる蜂の上に木があった

BACK INTO ENGLISH

There was a tree on a bee drinking a gallon of tea

INTO JAPANESE

1ガロンのお茶を飲んでいる蜂の上に木がありました

BACK INTO ENGLISH

There was a tree on a bee drinking a gallon of tea