create implication on_back -> lying
create implication on_side -> lying
create implication on_stomach -> lying
on_back - "Lying on one's own back."
on_side - "Lying on one's side."
on_stomach - "Quite simply, when one is lying on one's stomach."
Screwed up with the implication itself, not sure if it was possible to do for three tags at once.
Updated by warh