premise: Two girls playing catch on a lawn
hypothesis: Sisters are tossing a frisbee back and forth in the park.
explanation_1: Two girls playing catch on a lawn does not mean they are using a frisbee for that game, or that the lawn is part of a park.
explanation_2: Not all girls are sisters.  Playing catch does not imply that they are playing with a frisbee.  Being on a lawn does not imply that the lawn is in the park.
explanation_3: Just because two girls are playing catch on a lawn does not mean they are tossing a frisbee.
premise_logic: exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_lawn(x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_catch(x3) & (x1 = x2) & n_girl(x1) & card_eq_2(x1))
hypothesis_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(n_park(x6) & n_park(x3) & in(e2,x6) & a_forth(s2) & Manner(e2,s2) & Theme(e2,x5) & Actor(e2,x4) & v_toss(e2) & n_frisbee(x5) & n_sister(x4) & in(e1,x3) & a_back(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_toss(e1) & n_frisbee(x2) & n_sister(x1))
premise_sim: exists e1 x1 x2 x3 x4.(v_play(e1) & on(e1,x4) & n_lawn(x4) & n_girl(x1) & n_catch(x3) & card_eq_2(x1) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6.(v_toss(e2) & v_toss(e1) & n_sister(x4) & n_sister(x1) & n_park(x6) & n_park(x3) & n_frisbee(x5) & n_frisbee(x2) & in(e2,x6) & in(e1,x3) & a_forth(s2) & a_back(s1) & Theme(e2,x5) & Theme(e1,x2) & Manner(e2,s2) & Manner(e1,s1) & Actor(e2,x4) & Actor(e1,x1))