A group of people are walking down an alleyway.
Some people are outside.
A group of people is the same as some people. Walking down an alleyway implies being outside.
exists e1 s1 x1 x2 x3.(a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_alleyway(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_people(x1))