premise: Boats on water within a city.
hypothesis: The water is free of ice.
explanation_1: Just because there are boats on water within a city does not mean that the water is free of ice.
premise_logic: exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & within(x2,x3) & n_city(x3) & n_water(x2) & n_boat(x1))
hypothesis_logic: exists s1 x1 x2.(n_water(x1) & of(s1,x2) & n_ice(x2) & Theme(s1,x1) & a_free(s1))
premise_sim: exists x1 x2 x3.(within(x2,x3) & on(x1,x2) & n_water(x2) & n_city(x3) & n_boat(x1) & a_topic(x1))
hypothesis_sim: exists s1 x1 x2.(of(s1,x2) & n_water(x1) & n_ice(x2) & a_free(s1) & Theme(s1,x1))