YOU SAID:

The cat ate another cat while the third cat eats the one cat

INTO JAPANESE

猫は別の猫を食べ、3匹目の猫は1匹目の猫を食べます

BACK INTO ENGLISH

A cat eats another cat, and the third cat eats the first cat

INTO JAPANESE

猫が別の猫を食べ、3匹目の猫が最初の猫を食べる

BACK INTO ENGLISH

A cat eats another cat, then a third cat eats the first

INTO JAPANESE

猫が別の猫を食べ、その後3匹目の猫が最初の猫を食べる

BACK INTO ENGLISH

A cat eats another cat, then a third cat eats the first