A surfer cutting up some waves.
A person is surfing.
a surfer is a person. the expression cutting up some waves means surfing.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_cut(e1) & n_wave(x3) & (x1 = x2) & n_surfer(x1))
exists e1 x1.(Actor(e1,x1) & v_surf(e1) & n_person(x1))