A train conductor looks out the window of his train while smiling.
A train conductor is smiling at the sun.
The conductor could be smiling at anything, he does not have to be smiling at the sun.
exists e1 e2 s1 x1 x2 x3.(n_male(x3) & n_window(x3) & while(e1,e2) & Actor(e2,x1) & v_smile(e2) & a_out(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_look(e1) & of(x3,x2) & n_train(x2) & n_train(x2) & of(x2,x3) & n_conductor(x1) & of(x1,x2))
exists e1 x1 x2 x3.(n_sun(x3) & at(e1,x3) & Actor(e1,x1) & v_smile(e1) & n_conductor(x1) & of(x1,x2) & n_train(x2))