premise: A group of people walking arm and arm across the green grass.
hypothesis: The people are sitting on the ground.
explanation_1: People cannot be walking and sitting at the same time.
explanation_2: If the people are walking they cannot be sitting.
explanation_3: people can't be sitting if they are walking
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_grass(x7) & a_green(s1) & Theme(s1,x7) & a_topic(x1) & of(x1,x2) & across(e1,x7) & Theme(e1,x4) & Actor(e1,x3) & v_walk(e1) & n_arm(x6) & n_arm(x5) & subset_of(x6,x4) & subset_of(x5,x4) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e1 x1 x2.(n_ground(x2) & n_people(x1) & on(e1,x2) & Actor(e1,x1) & v_sit(e1))