A construction worker in a neon vest is working with electrical equipment while sparks fly.
The construction worker is using a welder.
Not all construction electrical equipment is a welder.
exists e1 p1 s1 x1 x2 x3 x4 x5.(exists e2 x6.(Actor(e2,x6) & v_fly(e2) & n_sparks(x6)) & while(e1,p1) & with(e1,x5) & n_equipment(x5) & a_electrical(s1) & Theme(s1,x5) & Actor(e1,x1) & v_work(e1) & in(x1,x3) & n_vest(x3) & of(x3,x4) & n_neon(x4) & n_worker(x1) & of(x1,x2) & n_construction(x2))
exists e1 x1 x2 x3.(n_worker(x1) & of(x1,x2) & n_construction(x2) & Theme(e1,x3) & Actor(e1,x1) & v_use(e1) & n_welder(x3))