Four men working putting a tree into the ground , two are looking away , while the other two are shoveling the tree into the ground .
It is probably not the case that four men are helping to save the environment by planting trees .
It is probably not the case that four men are helping to save the environment by planting trees .
It is almost certain that four men are helping to save the environment by planting trees .
Four men are helping to save the environment by planting trees .