Man catching a large wave on a surfboard.
A man is catching a large wave
In order to catch a large wave, you need a surfboard.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_catch(e1) & on(x3,x4) & n_surfboard(x4) & n_wave(x3) & a_large(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_wave(x2) & a_large(s1) & Theme(s1,x2) & n_man(x1))