premise: Couple walking on the beach.
hypothesis: The couple are laying in the sand.
explanation_1: The couple can't be laying in the sand if they are walking on the beach.
explanation_2: is the couple walking or laying?
explanation_3: The couple can not be both walking and laying down at the same time.
premise_logic: exists x1 x2 x3.(n_beach(x3) & a_topic(x1) & on(x1,x3) & n_walking(x1) & of(x1,x2) & n_couple(x2))
hypothesis_logic: exists e1 x1 x2.(n_sand(x2) & n_couple(x1) & in(e1,x2) & Actor(e1,x1) & v_lay(e1))