Five construction men working on building the roof frame to a new building .
The men are working on the building .
Five construction men working on building the roof frame to a new building.
The men are working on the building.
Men are working on putting a new roof on a building because working is a way of generalizing what the men are doing to the building.
Men are working on putting a new roof on a building because working is a way of generalizing what the men are doing to the building .