Attorney general's reference (no3 of 1994) (1997) - D stabbed 23 week pregnant girlfriend, she recovered but had to give birth early, baby was born alive but died at 4 months from premature birth, D was charged with murder but trial judge said when crime occurred baby wasn't 'reasonable creature in being' so acquitted him, HoL said when baby has been born then dies person can be liable only not creature in being if unborn, so he was charged with manslaughter (no mens rea for murder)