YOU SAID:

My dog sat on a wall with a fox playing baseball with a gun

INTO JAPANESE

私の犬は銃で野球をしているキツネと一緒に壁に座っていました

BACK INTO ENGLISH

My dog was sitting on the wall with a fox playing baseball with a gun

INTO JAPANESE

私の犬は銃で野球をしているキツネと一緒に壁に座っていました

BACK INTO ENGLISH

My dog was sitting on the wall with a fox playing baseball with a gun