People are watching a person in a weird vehicle in a plaza.
There is a crowd watching
A crowd watching doesn't necessarily imply that they are watching a person in a weird vehicle in a plaza.
exists e1 s1 x1 x2 x3 x4.(in(e1,x4) & n_plaza(x4) & in(e1,x3) & n_vehicle(x3) & a_weird(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_person(x2) & n_people(x1))
exists p1 x1 x2 x3.((x1 = x2) & n_watching(x2) & of(x2,x3) & n_crowd(x3))