YOU SAID:
the sleepy sleeper sleeps with the sleeping sleepy sleeper
INTO JAPANESE
眠っている睡眠者は、眠っている睡眠者と一緒に眠る
BACK INTO ENGLISH
a sleeping sleeper sleeps with a sleeping sleeper
INTO JAPANESE
寝ている人と寝ている人
BACK INTO ENGLISH
Sleeping person and person sleeping
INTO JAPANESE
寝ている人と寝ている人
BACK INTO ENGLISH
Sleeping person and person sleeping
That didn't even make that much sense in English.