Someone having fun on their surfboard in the clear blue ocean.
someone surfing
Someone having fun on their surfboard means someone surfing.
exists e1 s1 s2 x1 x2 x3 x4 x5.(n_ocean(x5) & a_blue(s2) & Theme(s2,x5) & a_clear(s1) & Theme(s1,x5) & a_topic(x1) & in(e1,x5) & on(e1,x4) & n_surfboard(x4) & of(x4,x1) & n_thing(x1) & Theme(e1,x3) & Actor(e1,x2) & v_have(e1) & n_fun(x3) & (x1 = x2) & n_person(x1))
exists x1 x2.(a_topic(x1) & Time(x1,x2) & n_surfing(x2) & n_person(x1))