Two people hiking in the woods by a tree.
Two people are enjoying a hike through the mountain.
While hiking THROUGH a mountain, one won't see trees because trees don't grow underground in nature.
exists e1 x1 x2 x3 x4.(n_wood(x3) & a_topic(x1) & by(e1,x4) & n_tree(x4) & in(e1,x3) & Actor(e1,x2) & v_hike(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_mountain(x3) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_hike(x2) & n_people(x1) & card_eq_2(x1))