Children walking up to and looking at a big tree.
The children are walking.
the big tree gives context to what they are walking to
exists e1 e2 s1 s2 s3 x1 x2 x3 x4.(at(e2,x4) & n_tree(x4) & a_big(s3) & Theme(s3,x4) & Actor(e2,x3) & v_look(e2) & n_child(x3) & a_up(s2) & Manner(e1,s2) & to(e1,x2) & n_tree(x2) & a_big(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_child(x1))
exists e1 x1.(n_child(x1) & Actor(e1,x1) & v_walk(e1))