premise: Two girls are sitting outside on the ground in front of a lake.
hypothesis: two girls sit by a lake
explanation_1: In front of a lake implies by a lake.
explanation_2: For two girls to sit in front of a lake, they must be by a lake.
explanation_3: Two girls sit by a lake is rephrase of two girls sitting outside on the ground in front of a lake.
premise_logic: exists e1 s1 x1 x2 x3 x4.(n_ground(x2) & in(e1,x3) & of(x3,x4) & n_lake(x4) & n_front(x3) & on(e1,x2) & a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_girl(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1 x2.(by(e1,x2) & n_lake(x2) & Actor(e1,x1) & v_sit(e1) & n_girl(x1) & card_eq_2(x1))