A group of people outside a barn.
Several people are outside.
Several people are outside a barn so they are outside.
exists x1 x2 x3.(a_topic(x1) & of(x1,x2) & outside(x2,x3) & n_barn(x3) & n_people(x2) & n_group(x1))
exists s1 s2 x1.(Theme(s2,x1) & a_outside(s2) & n_people(x1) & a_several(s1) & Theme(s1,x1))