A person holds a blow horn while wearing a helmet.
the people are getting ready for a parade
One person holds a blow horn so there aren't necessarily people getting ready for a parade. There isn't necessarily a parade.
exists e1 e2 x1 x2 x3 x4.(while(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_wear(e2) & n_helmet(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & Time(x2,x3) & n_horn(x3) & n_blow(x2) & n_person(x1))
exists e1 p1 x1.(n_people(x1) & exists s1 x2.(for(s1,x2) & n_parade(x2) & Theme(s1,x1) & a_ready(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1))