premise: A crowd of people are surrounding a street performance, there are buildings in the background.
hypothesis: A crowd of people are riding a train
explanation_1: crowd  surrounding a street performance cant be inferred as riding in train
explanation_2: The crowd of people are either surrounding a street performance or riding a train.
explanation_3: You can not be at a street performance and riding a train at the same time.
premise_logic: exists e1 p1 x1 x2 x3 x4 x7.(n_background(x7) & Theme(e1,x3) & Actor(e1,x1) & v_surround(e1) & exists p2 x5 x6.((x5 = x6) & in(x6,x7) & n_building(x6)) & that(x3,p1) & n_performance(x3) & of(x3,x4) & n_street(x4) & of(x1,x2) & n_people(x2) & n_crowd(x1))
hypothesis_logic: exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_train(x3) & of(x1,x2) & n_people(x2) & n_crowd(x1))