A MAN STARTED TO TOWN WITH A FOX, A GOOSE, AND A SACK OF CORN. HE CAME TO A STREAM WHICH HE HAD TO CROSS IN A TINY BOAT. HE COULD ONLY TAKE ONE ACROSS AT A TIME. HE COULD NOT LEAVE THE FOX ALONE WITH THE GOOSE, NEITHER COULD HE LEAVE THE GOOSE ALONE WITH THE CORN. HOW DID HE GET THEM ALL SAFELY ACROSS THE STREAM?