YOU SAID:
I have big potatos in my sack
INTO JAPANESE
袋に大きなじゃがいもが入っています
BACK INTO ENGLISH
There is a big potato in the bag
INTO JAPANESE
袋の中に大きなじゃがいもが入っています
BACK INTO ENGLISH
There is a big potato in the bag
Come on, you can do better than that.