YOU SAID:

The bear went over the mountain to see what he could see, and all that he could was the other side of the mountain

INTO JAPANESE

クマは彼が見ることができるものを見るために山を越え、彼ができることは山の反対側だった

BACK INTO ENGLISH

The bear crossed the mountain to see what he could see, and what he could do was the other side of the mountain

INTO JAPANESE

クマは彼が見ることができるものを見るために山を渡り、彼ができることは山の反対側でした

BACK INTO ENGLISH

The bear crossed the mountain to see what he could see, and what he could do was the other side of the mountain