Three young boys enjoying nature.
the boys are on a hike
Going on a hike is not the only way to enjoy nature.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_enjoy(e1) & n_nature(x3) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_3(x1))
exists p1 x1.(n_boy(x1) & exists x2.(on(x1,x2) & n_hike(x2)))