Two tired children rest on couches at an art museum while the adults around them view the art.
The children are lying down.
Just because they are tired and on a couch does not mean the children are lying down.
(x)
exists e1 s1 x1.(n_child(x1) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_lie(e1))