YOU SAID:
I think that my sister is a pretty cool person
INTO JAPANESE
私の妹はかなりかっこいい人だと思います
BACK INTO ENGLISH
I think my sister is a pretty cool person
INTO JAPANESE
私の妹はかなりかっこいい人だと思います
BACK INTO ENGLISH
I think my sister is a pretty cool person
That didn't even make that much sense in English.