People are watching a person in a weird vehicle in a plaza.
Someone is driving a weinermobile.
Someone driving a weinermobile doesn't necessarily suggest that person is 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 e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_weinermobile(x2) & n_person(x1))