premise: Young man performing a skateboard trick on a sidewalk in a city.
hypothesis: A young man is on a farm.
explanation_1: Farms are generally not in the city.
explanation_2: A man  performing a skateboard trick on a sidewalk in a city can not be on a farm.
explanation_3: If a person is on a sidewalk in a city, he cannot be on a farm at the same time.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(e1,x6) & n_city(x6) & on(e1,x5) & n_sidewalk(x5) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_trick(x3) & of(x3,x4) & n_skateboard(x4) & (x1 = x2) & n_man(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists p1 s1 x1.(exists x2.(on(x1,x2) & n_farm(x2)) & n_man(x1) & a_young(s1) & Theme(s1,x1))
premise_sim: exists e1 s1 x1 x2 x3 x4 x5 x6.(v_perform(e1) & on(e1,x5) & of(x3,x4) & n_trick(x3) & n_skateboard(x4) & n_sidewalk(x5) & n_man(x1) & n_city(x6) & in(e1,x6) & a_young(s1) & a_topic(x1) & Theme(s1,x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists s1 x1.(n_man(x1) & exists x2.(on(x1,x2) & n_farm(x2)) & a_young(s1) & Theme(s1,x1))