YOU SAID:
hello world. what's cookin'
INTO JAPANESE
ハローワールド。何が料理をしているの?
BACK INTO ENGLISH
Hello world. What's cooking?
INTO JAPANESE
ハローワールド。料理は何ですか?
BACK INTO ENGLISH
Hello world. What is cooking?
INTO JAPANESE
ハローワールド。料理とは何ですか?
BACK INTO ENGLISH
Hello world. What is cooking?
That didn't even make that much sense in English.