premise: A kayaker in whitewater rapids between two rocks, and a bystander on a rocky shore watching.
hypothesis: The rapids were full of debris.
explanation_1: Just because a kayaker in whitewater rapids between two rocks, and a bystander on a rocky shore watching does not necessary that  the rapids were full of debris.
premise_logic: exists s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & in(x1,x2) & between(x2,x4) & subset_of(x6,x4) & on(x6,x7) & n_watching(x7) & of(x7,x8) & n_shore(x8) & a_rocky(s1) & Theme(s1,x7) & n_bystander(x6) & subset_of(x5,x4) & n_rock(x5) & card_eq_2(x5) & n_rapid(x2) & of(x2,x3) & n_whitewater(x3) & n_kayaker(x1))
hypothesis_logic: exists s1 x1 x2.(n_rapid(x1) & of(s1,x2) & n_debris(x2) & Theme(s1,x1) & a_full(s1))
premise_sim: exists s1 x1 x2 x3 x4 x5 x6 x7 x8.(subset_of(x6,x4) & subset_of(x5,x4) & on(x6,x7) & of(x7,x8) & of(x2,x3) & n_whitewater(x3) & n_watching(x7) & n_shore(x8) & n_rock(x5) & n_rapid(x2) & n_kayaker(x1) & n_bystander(x6) & in(x1,x2) & card_eq_2(x5) & between(x2,x4) & a_topic(x1) & a_rocky(s1) & Theme(s1,x7))
hypothesis_sim: exists s1 x1 x2.(of(s1,x2) & n_rapid(x1) & n_debris(x2) & a_full(s1) & Theme(s1,x1))