YOU SAID:

if two witches are watching two watches, which witch is watching which watch?

INTO JAPANESE

2人の魔女が2つの時計を見ているなら、どの魔女がどの時計を見ているのですか?

BACK INTO ENGLISH

If two witches are looking at two watches, which witch is looking at which one?

INTO JAPANESE

2人の魔女が2つの時計を見ている場合、どの魔女がどれを見ていますか?

BACK INTO ENGLISH

If two witches are looking at two watches, which witch is looking at which one?