He spent an hour rigging up a portable saw to use in attempting to cut off a smaller piece of the sky, and then saw the motor burn out when he switched it on.
He cut another smaller piece off the sky.
mnli hypothesis: He cut another smaller piece off the sky. premise: He spent an hour rigging up a portable saw to use in attempting to cut off a smaller piece of the sky, and then saw the motor burn out when he switched it on.