A man sitting on top of an unfinished structure.
Two workmen are pouring concrete.
A man is one person and two workmen are two people, you can either have one person or two.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & of(x3,x4) & n_structure(x4) & a_unfinished(s1) & Theme(s1,x4) & n_top(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_pour(e1) & n_concrete(x2) & n_workman(x1) & card_eq_2(x1))