premise: A crowd watches a group of people dressed in yellow shirts perform.
hypothesis: Spectators watching a group of dolphins perform.
explanation_1: Either it is a  group of dolphins or people.
explanation_2: A group of people and a group of dophins are contradictory.
explanation_3: Dolphins are not people.
premise_logic: exists e2 e1 p1 s1 x1 x2 x3 x4.(exists e3 x5.(Actor(e3,x5) & v_watch(e3) & n_crowd(x5)) & Topic(e2,p1) & Actor(e2,x1) & v_perform(e2) & of(x1,x2) & in(e1,x4) & n_shirt(x4) & a_yellow(s1) & Theme(s1,x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists e2 e1 x1 x2 x3 x4.(Actor(e2,x1) & v_perform(e2) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & of(x3,x4) & n_dolphin(x4) & n_group(x3) & (x1 = x2) & n_spectator(x1))