An elderly woman, a man and a woman standing on a sidewalk together.
People standing on a sidewalk.
An elderly woman, a man and a woman is a group of people.    Both group of people are standing on a sidewalk.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & rel(x1,x2) & subset_of(x4,x2) & a_together(s2) & Manner(e1,s2) & on(e1,x6) & n_sidewalk(x6) & Actor(e1,x5) & v_stand(e1) & (x4 = x5) & n_woman(x4) & subset_of(x3,x2) & n_man(x3) & n_woman(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_sidewalk(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1))