premise: The squirrel sits straight up in the grass.
hypothesis: A squirrel sits in the grass.
explanation_1: In the grass a squirrel sits straight up.
explanation_2: Sits straight up is a paraphrase of sits.
explanation_3: If the squirrel is not in a tree, he is in the grass.
premise_logic: exists e1 s1 x1 x2.(n_grass(x2) & n_squirrel(x1) & in(e1,x2) & r_straight(e1) & a_up(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1))
hypothesis_logic: exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_squirrel(x1))
premise_sim: exists e1 s1 x1 x2.(v_sit(e1) & r_straight(e1) & n_squirrel(x1) & n_grass(x2) & in(e1,x2) & a_up(s1) & Manner(e1,s1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_sit(e1) & n_squirrel(x1) & n_grass(x2) & in(e1,x2) & Actor(e1,x1))