A man dons proper safety gear before welding.
the man is at home
Most welding is done at a work location, it is unlikely someone to be welding at home.
exists e1 e2 s1 x1 x2 x3.(before(e1,e2) & Actor(e2,x1) & v_weld(e2) & Theme(e1,x2) & Actor(e1,x1) & v_don(e1) & n_gear(x2) & of(x2,x3) & n_safety(x3) & a_proper(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2.(at(x1,x2) & n_home(x2)))