premise: Two girls in red life jackets lock oars on a river.
hypothesis: Two girls at a camp.
explanation_1: The fact that they are on a river does not imply they are at a camp.
explanation_2: Being on a river doesn't imply being at a camp.
explanation_3: Camp is not the only place with boats and oars.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5.(on(e1,x5) & n_river(x5) & Theme(e1,x4) & Actor(e1,x1) & v_lock(e1) & n_oar(x4) & in(x1,x2) & n_jacket(x2) & of(x2,x3) & n_life(x3) & a_red(s1) & Theme(s1,x2) & n_girl(x1) & card_eq_2(x1))
hypothesis_logic: exists x1 x2.(a_topic(x1) & at(x1,x2) & n_camp(x2) & n_girl(x1) & card_eq_2(x1))