Children climbing huge tree.
Children are playing on a huge tree during a family outing.
The children climbing the tree could be doing so in any number of scenarios, only one of which would be a family outing. That they are climbing the tree does not necessarily imply they are playing (they could be frightened of something for example).
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_climb(e1) & n_tree(x3) & a_huge(s1) & Theme(s1,x3) & (x1 = x2) & n_child(x1))
exists e1 s1 x1 x2 x3 x4.(during(e1,x3) & n_outing(x3) & of(x3,x4) & n_family(x4) & on(e1,x2) & n_tree(x2) & a_huge(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))