A man in a black shirt and gloves is welding.
A man working
Welding implies working.
exists e1 s1 x1 x2 x3 x4.(Actor(e1,x1) & v_weld(e1) & in(x1,x2) & subset_of(x4,x2) & n_glove(x4) & subset_of(x3,x2) & n_shirt(x3) & a_black(s1) & Theme(s1,x3) & n_man(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1))