A large group of men in the forest.
a group of men is in the forest
A large group is a more specific type of group. If we know there is a large group then we already know that there is some kind of group.
exists s1 x1 x2 x3.(n_forest(x3) & a_topic(x1) & of(x1,x2) & in(x2,x3) & n_man(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.(n_forest(x3) & in(x1,x3) & of(x1,x2) & n_man(x2) & n_group(x1))