A man in an orange vest works on fixing a train.
A man is outside.
A train is usually outside.
exists e1 e2 x1 x2 x3 x4 x5.(on(e1,e2) & Theme(e2,x5) & Actor(e2,x4) & v_fix(e2) & n_train(x5) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_man(x1))