YOU SAID:
I'm so mad because the blue jackets lost
INTO JAPANESE
青いジャケットがなくなったので私はとても怒っている
BACK INTO ENGLISH
I am very angry because the blue jacket is gone
INTO JAPANESE
青いジャケットがなくなったので、私はとても怒っています
BACK INTO ENGLISH
I am very angry because the blue jacket is gone
That didn't even make that much sense in English.