A parade of people walk the street carrying the American flag.
The people are happy
People are looking happing while doing parade
exists e1 e2 s1 x1 x2 x3 x4.(n_flag(x4) & a_american(s1) & Theme(s1,x4) & n_street(x3) & for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_carry(e2) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2) & n_parade(x1))
exists s1 x1.(n_people(x1) & Theme(s1,x1) & a_happy(s1))