premise: A surfer on a wave.
hypothesis: A swimmer at a pool.
explanation_1: One cannot be a surfer on a wave if they are a swimmer at a pool.
explanation_2: A surfer is different than a swimmer. And a wave is different than a pool.
explanation_3: A surfer is not a swimmer and a wave is not a pool.
premise_logic: exists x1 x2.(a_topic(x1) & on(x1,x2) & n_wave(x2) & n_surfer(x1))
hypothesis_logic: exists x1 x2.(a_topic(x1) & at(x1,x2) & n_pool(x2) & n_swimmer(x1))
premise_sim: exists x1 x2.(on(x1,x2) & n_wave(x2) & n_surfer(x1) & a_topic(x1))
hypothesis_sim: exists x1 x2.(n_swimmer(x1) & n_pool(x2) & at(x1,x2) & a_topic(x1))