premise: a group of people walking down road heading away from the camera.
hypothesis: Several people walk down the road, backs facing the camera.
explanation_1: Backs facing the camera is heading away from it.
explanation_2: A group of people are several people.  People heading away from the camera have their backs facing the camera.
explanation_3: When people walk away from a cameras point-of-view their backs face the camera.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(n_camera(x5) & a_topic(x1) & of(x1,x2) & for(e1,e2) & from(e2,x5) & r_away(e2) & Actor(e2,x3) & v_head(e2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_walk(e1) & n_road(x4) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e1 e2 p1 s1 s2 x1 x2 x3 x4.(n_camera(x4) & n_road(x2) & exists e3.(Theme(e3,x4) & Actor(e3,x3) & v_face(e3)) & Topic(e2,p1) & Actor(e2,x3) & v_back(e2) & n_people(x3) & a_several(s2) & Theme(s2,x3) & down(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))