YOU SAID:
Apple is eating the man, while he strokes his beard.
INTO JAPANESE
アップルは男を食べている間、男はひげをなでている。
BACK INTO ENGLISH
Apple is eating the man while the man is stroking his beard.
INTO JAPANESE
男がひげをなでている間、リンゴは男を食べています。
BACK INTO ENGLISH
The apple is eating the man while he strokes his beard.
INTO JAPANESE
男がひげを撫でている間、リンゴが男を食べている。
BACK INTO ENGLISH
The apple is eating the man while he strokes his beard.
That didn't even make that much sense in English.