Man wearing black is windsurfing.
the man is having a great time
One can be windsurfing and not having a great time.
exists e1 s1 x1 x2 x3.(Actor(e1,x1) & v_windsurf(e1) & Theme(s1,x3) & a_black(s1) & (x1 = x3) & n_wear(x1) & of(x1,x2) & n_man(x2))
exists e1 s1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_time(x2) & a_great(s1) & Theme(s1,x2))