premise: The two boys are swimming with boogie boards.
hypothesis: The two boys are in their bath tub
explanation_1: the two boys could not be in their bath tub, while swimming with boogie boards.
explanation_2: You do not swim in a bath tub.  Boogie boards do not fit in a bath tub.
explanation_3: swimming cannot be done in  tub.
premise_logic: exists e1 x1 x2 x3.(n_boy(x1) & card_eq_2(x1) & with(e1,x2) & n_board(x2) & of(x2,x3) & n_boogie(x3) & Actor(e1,x1) & v_swim(e1))
hypothesis_logic: exists p1 x1 x2 x3.(n_tub(x2) & of(x2,x3) & n_bath(x3) & of(x2,x1) & n_thing(x1) & n_boy(x1) & card_eq_2(x1) & in(x1,x2))
premise_sim: exists e1 x1 x2 x3.(with(e1,x2) & v_swim(e1) & of(x2,x3) & n_boy(x1) & n_boogie(x3) & n_board(x2) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists x1 x2 x3.(of(x2,x3) & of(x2,x1) & n_tub(x2) & n_thing(x1) & n_boy(x1) & n_bath(x3) & in(x1,x2) & card_eq_2(x1))