Two men in hard hats on the roof of a building that is under construction.
The men might be construction workers
Sentence 1 is missing construction workers
exists p1 s1 x1 x2 x3 x4 x5.(n_roof(x3) & a_topic(x1) & in(x1,x2) & on(x2,x3) & of(x3,x4) & exists x6.(under(x5,x6) & n_construction(x6)) & (x4 = x5) & n_building(x4) & n_hat(x2) & a_hard(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 p1 x1.(n_man(x1) & exists p2 x2 x3.((x1 = x2) & n_worker(x2) & of(x2,x3) & n_construction(x3)) & Topic(e1,p1) & Actor(e1,x1) & v_might(e1))