People sing with large maroon books.
People are singing.
Large maroon books are what people are singing with
exists e1 s1 x1 x2 x3.(with(e1,x2) & n_book(x2) & of(x2,x3) & n_maroon(x3) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sing(e1) & n_people(x1))
exists e1 x1.(Actor(e1,x1) & v_sing(e1) & n_people(x1))