An infant lays on a bed with it's mouth open.
The baby might be yawning
Mouth open doesn't necessarily mean yawning.
exists e1 p1 x1 x2 x3.(on(e1,x2) & exists x4 x5.((x3 = x4) & n_open(x4) & of(x4,x5) & n_mouth(x5)) & (x2 = x3) & with(x2,x1) & n_thing(x1) & n_bed(x2) & Actor(e1,x1) & v_lay(e1) & n_infant(x1))
exists e1 p1 x1.(n_baby(x1) & exists e2.(Actor(e2,x1) & v_yawn(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_might(e1))