A surfer is riding numerous waves.
A surfer catches a huge wave.
huge waves are rare, small are more likely
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_wave(x2) & a_numerous(s1) & Theme(s1,x2) & n_surfer(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_wave(x2) & a_huge(s1) & Theme(s1,x2) & n_surfer(x1))