YOU SAID:
My potato is purple and rotted.
INTO JAPANESE
私のじゃがいもは紫色で腐っています。
BACK INTO ENGLISH
My potatoes are purple and rotten.
INTO JAPANESE
私のじゃがいもは紫色で腐っています。
BACK INTO ENGLISH
My potatoes are purple and rotten.
That didn't even make that much sense in English.