Ladder against a tree and rope harness being set up by a camp leader in front of campers .
It is impossible that ladder against a tree and rope harness being set up by a camp leader to cut down a tree .
It is impossible that ladder against a tree and rope harness being set up by a camp leader to cut down a tree .
It is probable that ladder against a tree and rope harness being set up by a camp leader to cut down a tree .
Ladder against a tree and rope harness being set up by a camp leader to cut down a tree .