A boy is covered with marker.
There is a young human.
a boy is a young human
exists e1 x1 x2.(with(e1,x2) & n_marker(x2) & Theme(e1,x1) & v_cover(e1) & n_boy(x1))
exists p1 x1 s1 x2.((x1 = x2) & n_human(x2) & a_young(s1) & Theme(s1,x2))