premise: A man is sitting on the floor and is surrounded by pictures.
hypothesis: A man sitting on the floor with pictures around him.
explanation_1: To be surrounded by pictures implies there are pictures around him.
explanation_2: Surrounded by pictures is a rephrasing of pictures around him.
explanation_3: Surrounded and around (him) imply the same placement of objects. In both sentences there are pictures around the man.
premise_logic: exists e2 e1 x1 x2 x3 x4.(n_floor(x2) & Actor(e2,x4) & n_picture(x4) & Theme(e2,x3) & v_surround(e2) & n_man(x3) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(n_male(x3) & n_floor(x3) & a_topic(x1) & around(e1,x3) & with(e1,x4) & n_picture(x4) & on(e1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
premise_sim: exists e2 e1 x1 x2 x3 x4.(v_surround(e2) & v_sit(e1) & on(e1,x2) & n_picture(x4) & n_man(x3) & n_man(x1) & n_floor(x2) & Theme(e2,x3) & Actor(e2,x4) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3 x4.(with(e1,x4) & v_sit(e1) & on(e1,x3) & n_picture(x4) & n_man(x1) & n_male(x3) & n_floor(x3) & around(e1,x3) & a_topic(x1) & Actor(e1,x2) & (x1 = x2))