Construction worker, welding on high beam.
The man is the foreman.
The fact that construction worker welding doesn't imply that he is a man and also the foreman.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_beam(x4) & a_high(s1) & Theme(s1,x4) & Actor(e1,x3) & v_weld(e1) & (x1 = x3) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists p1 x1 x2.(n_foreman(x2) & n_man(x1) & (x1 = x2))