YOU SAID:

Guess what, i have a sand castle

INTO JAPANESE

推測、私は砂の城を持っています

BACK INTO ENGLISH

Guess, I have a sand castle

INTO JAPANESE

推測、砂の城がある

BACK INTO ENGLISH

Guess, there's a sand castle

INTO JAPANESE

推測して、砂の城がある

BACK INTO ENGLISH

Guess, there's a sand castle