They would burn to the ground by morning.
( They ( ( would ( ( burn ( to ( the ground ) ) ) ( by morning ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD would) (VP (VB burn) (PP (TO to) (NP (DT the) (NN ground))) (PP (IN by) (NP (NN morning))))) (. .)))
They would not burn to the ground by morning.
( They ( ( ( would not ) ( ( burn ( to ( the ground ) ) ) ( by morning ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD would) (RB not) (VP (VB burn) (PP (TO to) (NP (DT the) (NN ground))) (PP (IN by) (NP (NN morning))))) (. .)))