sentence: We see men working on a roof on a ranch style house. sentence:  We see the supplies on the ground. sentence:  We see the men on the front part of the roof. sentence:  We see a man throwing shingles into a trailer on the ground. sentence:  We see the rolls of roofing materials. sentence:  We see a man throwing shingles into a trailer. sentence:  Three men throw shingles off the roof.