A man cooking is cooking on his barbecue.
Someone cooks.
A man is someone.
exists e1 x1 x2 x3.(on(e1,x3) & n_barbecue(x3) & of(x3,x1) & n_male(x1) & Actor(e1,x1) & v_cook(e1) & n_cooking(x1) & of(x1,x2) & n_man(x2))
exists x1.(a_topic(x1) & n_cook(x1))