Three men are working on a roof.
There are men fixing a leak
Just because three men are working on a roof does not imply that they are men fixing a leak
exists e1 x1 x2.(on(e1,x2) & n_roof(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_3(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_fix(e1) & n_leak(x4) & (x2 = x3) & n_man(x2))