premise: People riding on a tour bus in a parade wave to the bystanders.
hypothesis: The people are waving.
explanation_1: to wave is waving
explanation_2: People who wave to the bystanders are waving.
explanation_3: People wave is a rephrasing of " people are waving "
premise_logic: exists e1 x1 x2 x3 x4 x5 x6 x7.(n_bystander(x7) & a_topic(x1) & on(e1,x3) & in(x3,x5) & to(x5,x7) & n_wave(x5) & of(x5,x6) & n_parade(x6) & n_bus(x3) & of(x3,x4) & n_tour(x4) & Actor(e1,x2) & v_ride(e1) & (x1 = x2) & n_people(x1))
hypothesis_logic: exists e1 x1.(n_people(x1) & Actor(e1,x1) & v_wave(e1))