YOU SAID:
Chicken eat beef for calories.
INTO JAPANESE
チキンはカロリーのために牛肉を食べます。
BACK INTO ENGLISH
Chicken eats beef for calories.
INTO JAPANESE
チキンはカロリーのためにビーフを食べます。
BACK INTO ENGLISH
Chicken eats beef for calories.
That didn't even make that much sense in English.