A man with his young children.
The man is a single parent.
man doesn't have to be a single parent
exists s1 x1 x2.(a_topic(x1) & with(x1,x2) & n_child(x2) & a_young(s1) & Theme(s1,x2) & of(x2,x1) & n_male(x1) & n_man(x1))
exists p1 x1.(n_man(x1) & exists s1 x2.((x1 = x2) & n_parent(x2) & a_single(s1) & Theme(s1,x2)))