sentence: Man begins to rip up carpet underlay. sentence:   He measures the slat to put between the door opening. sentence:   Then he places materials underneath the carpet underlay. sentence:   He puts a wooden slat in the door entrance. sentence:   He picks the slat up. sentence:   He cuts the slat. sentence:   He lays the slat down again. sentence:   He drills it into place. sentence:   He then lays his hands on the top of the slat.