premise: Hikers walk along some tough terrain.
hypothesis: Hiking pace along rough terrain.
explanation_1: Hikers describes who is hiking. Pace describes the walk.
explanation_2: Hikers pacing along are walking.  A tough terrain is a rough terrain.
explanation_3: Pace is a rephrasing of walk
premise_logic: exists e1 s1 x1 x2.(along(e1,x2) & n_terrain(x2) & a_tough(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_hiker(x1))
hypothesis_logic: exists e1 s1 x1 x2.(a_topic(x1) & along(x1,x2) & n_terrain(x2) & a_rough(s1) & Theme(s1,x2) & n_pace(x1) & Actor(e1,x1) & v_hike(e1))
premise_sim: exists e1 s1 x1 x2.(v_walk(e1) & n_terrain(x2) & n_hiker(x1) & along(e1,x2) & a_tough(s1) & Theme(s1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 s1 x1 x2.(v_hike(e1) & n_terrain(x2) & n_pace(x1) & along(x1,x2) & a_topic(x1) & a_rough(s1) & Theme(s1,x2) & Actor(e1,x1))