A man in a Las Vegas t-shirt smiles while meat is being cooked on a grill in the background.
a man in a t shirt smiles at a barbecue
A man can cooked on a grill at a barbecue.
(x)
exists e1 x1 x2 x3 x4.(at(e1,x4) & n_barbecue(x4) & Actor(e1,x1) & v_smile(e1) & in(x1,x2) & n_shirt(x2) & of(x2,x3) & n_t(x3) & n_man(x1))