premise: These people are walking on cement blocks.
hypothesis: The cement blocks are a wall.
explanation_1: The fact that they are walking on cement blocks doesn't imply that the blocks are a wall.  If anything, it implies that the blocks are a floor.
premise_logic: exists e1 x1 x2 x3.(n_people(x1) & on(e1,x2) & n_block(x2) & of(x2,x3) & n_cement(x3) & Actor(e1,x1) & v_walk(e1))
hypothesis_logic: exists p1 x1 x2.(n_block(x1) & of(x1,x2) & n_cement(x2) & exists x3.((x1 = x3) & n_wall(x3)))
premise_sim: exists e1 x1 x2 x3.(v_walk(e1) & on(e1,x2) & of(x2,x3) & n_people(x1) & n_cement(x3) & n_block(x2) & Actor(e1,x1))
hypothesis_sim: exists x1 x2.(of(x1,x2) & n_cement(x2) & n_block(x1) & exists x3.(n_wall(x3) & (x1 = x3)))