YOU SAID:

there once was a man who was sitting on the stairs with his cat his cat said meaw

INTO JAPANESE

かつて彼の猫と一緒に階段に座っていた男がいた彼の猫は私を言った

BACK INTO ENGLISH

There was once a man sitting on the stairs with his cat, and his cat told me

INTO JAPANESE

一度猫と一緒に階段に座っていた男がいて、彼の猫は私に言った

BACK INTO ENGLISH

Once there was a man sitting on the stairs with the cat, and his cat told me

INTO JAPANESE

一度猫と一緒に階段に座っている男がいて、彼の猫は私に言った

BACK INTO ENGLISH

Once there was a man sitting on the stairs with the cat, and his cat told me