premise: A singer is crowd surfing.
hypothesis: A singer is crowd surfing
explanation_1: A singer is crowd surfing is exactly the same as A singer is crowd surfing.
premise_logic: exists p1 x1.(exists x2 x3.((x1 = x2) & n_surfing(x2) & of(x2,x3) & n_crowd(x3)) & n_singer(x1))
hypothesis_logic: exists p1 x1.(exists x2 x3.((x1 = x2) & n_surfing(x2) & of(x2,x3) & n_crowd(x3)) & n_singer(x1))
premise_sim: exists x1.(n_singer(x1) & exists x2 x3.(of(x2,x3) & n_surfing(x2) & n_crowd(x3) & (x1 = x2)))
hypothesis_sim: exists x1.(n_singer(x1) & exists x2 x3.(of(x2,x3) & n_surfing(x2) & n_crowd(x3) & (x1 = x2)))