premise: A brown dog is in the middle of a line of dogs chasing a dirty tennis ball over dirt.
hypothesis: The tennis ball is clean.
explanation_1: Clean tennis in neat place and dirty tennis ball in dirty place
explanation_2: DOG AND THE BALL CANNOT BE ONE
explanation_3: ball can't be clean if it is dirty
premise_logic: exists p1 s1 x1 x2.(n_middle(x2) & exists e1 x3 x4 x5 x6 x7 x8 x9.(in(x1,x2) & of(x2,x3) & of(x3,x4) & over(e1,x9) & n_dirt(x9) & Theme(e1,x6) & Actor(e1,x5) & v_chase(e1) & n_ball(x6) & of(x6,x8) & n_tennis(x8) & of(x6,x7) & n_dirty(x7) & (x4 = x5) & n_dog(x4) & n_line(x3)) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
hypothesis_logic: exists s1 x1 x2.(n_ball(x1) & of(x1,x2) & n_tennis(x2) & Theme(s1,x1) & a_clean(s1))