YOU SAID:

there there and they're going there to find their ball

INTO JAPANESE

そこに彼らは彼らのボールを見つけるためにそこに行きます

BACK INTO ENGLISH

There they go there to find their ball

INTO JAPANESE

そこで彼らはボールを見つけるためにそこに行きます

BACK INTO ENGLISH

So they go there to find the ball

INTO JAPANESE

そこで彼らはボールを見つけるためにそこに行きます

BACK INTO ENGLISH

So they go there to find the ball