A young boy in a white shirt with a rubber mallet.
A boy with an orange rubber mallet.
The mallet is not necessarily orange.  It could be any color.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & with(x2,x3) & n_mallet(x3) & of(x3,x4) & n_rubber(x4) & n_shirt(x2) & a_white(s2) & Theme(s2,x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & n_mallet(x2) & of(x2,x4) & n_rubber(x4) & of(x2,x3) & n_orange(x3) & n_boy(x1))