A guy wearing protective gear is welding a steel beam.
The man is welding a steal beam back together.
A guy can weld a steel beam for many reasons and not just to weld the beam back together.
exists e2 e1 s1 x1 x2 x3 x4 x5.(Theme(e2,x4) & Actor(e2,x1) & v_weld(e2) & n_beam(x4) & of(x4,x5) & n_steel(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_gear(x3) & a_protective(s1) & Theme(s1,x3) & (x1 = x2) & n_guy(x1))
exists e1 s1 s2 x1 x2.(n_man(x1) & r_back(e1) & a_together(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_weld(e1) & n_beam(x2) & a_steal(s1) & Theme(s1,x2))