A young girl and an older man are checking out at the food store.
A young girl is behind an old man in a checkout line.
Just because a young girl and an older man are checking out at a food store doesn't reveal any reason to deduce that the girl is behind the man. An older man is older than a young girl but it doesn't necessarily make him old.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5.(n_store(x4) & of(x4,x5) & n_food(x5) & at(e1,x4) & a_out(s3) & Manner(e1,s3) & Actor(e1,x1) & v_check(e1) & subset_of(x3,x1) & n_man(x3) & r_more(s2) & a_older(s2) & Theme(s2,x3) & subset_of(x2,x1) & n_girl(x2) & a_young(s1) & Theme(s1,x2))
exists p1 s1 x1.(exists s2 x2 x3 x4.(behind(x1,x2) & in(x2,x3) & n_line(x3) & of(x3,x4) & n_checkout(x4) & n_man(x2) & a_old(s2) & Theme(s2,x2)) & n_girl(x1) & a_young(s1) & Theme(s1,x1))