premise: People in motion down a city sidewalk.
hypothesis: People walk down a sidewalk.
explanation_1: There's a good reason it's called "sidewalk" - because when people are 'in motion' down one, it's perfectly ordinary to assume that the form of motion is walking.
explanation_2: "Being in motion down a sidewalk" means walking down a sidewalk.
explanation_3: Walking down the sidewalk could be described as being in motion.
premise_logic: exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & down(x2,x3) & n_sidewalk(x3) & of(x3,x4) & n_city(x4) & n_motion(x2) & n_people(x1))
hypothesis_logic: exists e1 x1 x2.(down(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
premise_sim: exists x1 x2 x3 x4.(of(x3,x4) & n_sidewalk(x3) & n_people(x1) & n_motion(x2) & n_city(x4) & in(x1,x2) & down(x2,x3) & a_topic(x1))
hypothesis_sim: exists e1 x1 x2.(v_walk(e1) & n_sidewalk(x2) & n_people(x1) & down(e1,x2) & Actor(e1,x1))