four rockers posing on a tree stump.
Four people are on a redwood tree stump.
You can not infer it is redwood.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_stump(x3) & of(x3,x4) & n_tree(x4) & Actor(e1,x2) & v_pose(e1) & (x1 = x2) & n_rocker(x1) & card_eq_4(x1))
exists p1 x1.(exists x2 x3 x4.(on(x1,x2) & n_stump(x2) & of(x2,x4) & n_tree(x4) & of(x2,x3) & n_redwood(x3)) & n_people(x1) & card_eq_4(x1))