A surfer flips his board so it is perpendicular to the ocean.
A surfer is in the ocean
A surfer would do tricks with his board in the ocean.
exists e1 p1 x1 x2 x3.(n_ocean(x3) & exists s1.(to(s1,x3) & Theme(s1,x1) & a_perpendicular(s1)) & n_thing(x1) & so(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_flip(e1) & n_board(x2) & of(x2,x1) & n_male(x1) & n_surfer(x1))
exists p1 x1 x2.(n_ocean(x2) & in(x1,x2) & n_surfer(x1))