A man and a woman are talking under a tree.
A man and a woman are having a heated discussion under a tree.
A couple are sitting under a tree
exists e1 x1 x2 x3 x4.(under(e1,x4) & n_tree(x4) & Actor(e1,x1) & v_talk(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 s1 x1 x2 x3 x4 x5.(under(e1,x5) & n_tree(x5) & Theme(e1,x4) & Actor(e1,x1) & v_have(e1) & n_discussion(x4) & a_heated(s1) & Theme(s1,x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))