YOU SAID:
paper airplane are nice
INTO JAPANESE
紙飛行機はいいです
BACK INTO ENGLISH
Paper airplane is good
INTO JAPANESE
紙飛行機がいい
BACK INTO ENGLISH
A paper airplane is good
INTO JAPANESE
紙飛行機がいい
BACK INTO ENGLISH
A paper airplane is good
That didn't even make that much sense in English.