A child with a red backpack following an adult on a hike through the woods.
The kid is the adult's son
Following an adult does not imply that the kid is the adult's son.
exists s1 x1 x2 x3 x4 x5.(n_wood(x5) & a_topic(x1) & with(x1,x2) & follow(x2,x3) & on(x3,x4) & through(x4,x5) & n_hike(x4) & n_adult(x3) & n_backpack(x2) & a_red(s1) & Theme(s1,x2) & n_child(x1))
exists p1 x1 x2 x3.(n_son(x3) & of(x3,x2) & n_adult(x2) & n_kid(x1) & (x1 = x3))