premise: A boy on a BMX bike
hypothesis: The rollerblader is a boy.
explanation_1: A boy can not be rollerblading and riding a bike at the same time.
premise_logic: exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_bike(x2) & (x2 = x3) & ne_org_bmx(x3) & n_boy(x1))
hypothesis_logic: exists p1 x1.(n_rollerblader(x1) & exists x2.((x1 = x2) & n_boy(x2)))
premise_sim: exists x1 x2 x3.(on(x1,x2) & ne_org_bmx(x3) & n_boy(x1) & n_bike(x2) & a_topic(x1) & (x2 = x3))
hypothesis_sim: exists x1.(n_rollerblader(x1) & exists x2.(n_boy(x2) & (x1 = x2)))