a man climbs a large rock.
A man sits down underneath a rock.
Climbs and sits down are different.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_rock(x2) & a_large(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 x1 x2.(underneath(e1,x2) & n_rock(x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_man(x1))