YOU SAID:
me and my cousin sister played eureka
INTO JAPANESE
私といとこの妹はユーレカを演じました
BACK INTO ENGLISH
I and my cousin's sister played Eureka
INTO JAPANESE
私といとこの妹はユーレカを演じました
BACK INTO ENGLISH
I and my cousin's sister played Eureka
You've done this before, haven't you.