person on a wakeboard in the air
Jenny enjoys sports at the beach.
You can not infer they are at a beach.
exists x1 x2 x3.(n_air(x3) & a_topic(x1) & on(x1,x2) & in(x2,x3) & n_wakeboard(x2) & n_person(x1))
exists e1 x1 x2 x3.(n_beach(x3) & ne_per_jenny(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_sport(x2))