A person in a green shirt and jeans welds a large pipe.
Someone is welding a large pipe.
A person is a someone, and when a person welds it means the person is welding.
exists e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e1,x5) & Actor(e1,x1) & v_weld(e1) & n_pipe(x5) & a_large(s2) & Theme(s2,x5) & in(x1,x2) & subset_of(x4,x2) & n_jeans(x4) & subset_of(x3,x2) & n_shirt(x3) & a_green(s1) & Theme(s1,x3) & n_person(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_weld(e1) & n_pipe(x2) & a_large(s1) & Theme(s1,x2) & n_person(x1))