A man in yellow grimaces.
A man is scowling.
During scowling face gets grimaces.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_grimace(x2) & a_yellow(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_scowl(e1) & n_man(x1))