a group of children are standing outside a building.
a group of children lay on their cots during nap time.
A child cannot lay and be standing at the same time.  Nap time would not take place outside.
exists e1 x1 x2 x3.(outside(e1,x3) & n_building(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 x1 x2 x3 x4 x5.(during(e1,x4) & n_time(x4) & of(x4,x5) & n_nap(x5) & on(e1,x3) & n_cot(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x1) & v_lay(e1) & of(x1,x2) & n_child(x2) & n_group(x1))