All three men can't be in the same horizontal plane if one is in a hole and the others are looing at him.


Context: "Three men are wearing safety yellow jackets and hard hats on the sight of a construction project; one is in a hole and the other two are looking at the man standing in the hole." Claim: "There are three men in hard hats standing on the same horizontal plane."
Considering the context, is the claim true, false, or unknown?