Or to judge by the  Failing to nurse at night can lead to painful engorgement or even breast infection.
( Or ( ( to ( ( judge ( by ( ( the Failing ) ( to nurse ) ) ) ) ( at night ) ) ) ( ( can ( lead ( to ( ( ( painful engorgement ) or ) ( even ( breast infection ) ) ) ) ) ) . ) ) )
(ROOT (S (CC Or) (S (VP (TO to) (VP (VB judge) (PP (IN by) (NP (NP (DT the) (NN Failing)) (PP (TO to) (NP (NN nurse))))) (PP (IN at) (NP (NN night)))))) (VP (MD can) (VP (VB lead) (PP (TO to) (NP (NP (JJ painful) (NN engorgement)) (CC or) (NP (RB even) (NN breast) (NN infection)))))) (. .)))
Mothers should nurse twice at night.
( Mothers ( ( should ( ( nurse twice ) ( at night ) ) ) . ) )
(ROOT (S (NP (NNS Mothers)) (VP (MD should) (VP (VB nurse) (ADVP (RB twice)) (PP (IN at) (NP (NN night))))) (. .)))