premise: Two guys sit on opposite sides of a strange billboard.
hypothesis: Two guys sit on the side of a billboard.
explanation_1: There is a strange billboard with two guys sitting on opposite sides of it.
explanation_2: The opposite side is one side of the billboard.
explanation_3: "On the side of a billboard"is a rephrasing of "opposite sides of a billboard".
premise_logic: exists e1 s1 s2 x1 x2 x3.(on(e1,x2) & of(x2,x3) & n_billboard(x3) & a_strange(s2) & Theme(s2,x3) & n_side(x2) & a_opposite(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_guy(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_side(x2) & on(e1,x2) & of(x2,x3) & n_billboard(x3) & Actor(e1,x1) & v_sit(e1) & n_guy(x1) & card_eq_2(x1))
premise_sim: exists e1 s1 s2 x1 x2 x3.(v_sit(e1) & on(e1,x2) & of(x2,x3) & n_side(x2) & n_guy(x1) & n_billboard(x3) & card_eq_2(x1) & a_strange(s2) & a_opposite(s1) & Theme(s2,x3) & Theme(s1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3.(v_sit(e1) & on(e1,x2) & of(x2,x3) & n_side(x2) & n_guy(x1) & n_billboard(x3) & card_eq_2(x1) & Actor(e1,x1))