A mother and baby are sleeping on the ground.
The ground is being used to sleep on.
If people sleep they are sleeping
exists e1 x1 x2 x3 x4.(n_ground(x4) & on(e1,x4) & Actor(e1,x1) & v_sleep(e1) & n_baby(x3) & n_mother(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 p1 x1.(n_ground(x1) & Recipient(e1,p1) & Topic(e1,x1) & v_use(e1) & exists e2 s1.(a_on(s1) & Manner(e2,s1) & Actor(e2,x1) & v_sleep(e2)))