Jon's defense began to weaken and slow.
( ( ( Jon 's ) defense ) ( ( began ( to ( ( weaken and ) slow ) ) ) . ) )
(ROOT (S (NP (NP (NNP Jon) (POS 's)) (NN defense)) (VP (VBD began) (S (VP (TO to) (VP (VB weaken) (CC and) (VB slow))))) (. .)))
Jon began to lose his strength and defense.
( Jon ( ( began ( to ( lose ( his ( ( strength and ) defense ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Jon)) (VP (VBD began) (S (VP (TO to) (VP (VB lose) (NP (PRP$ his) (NN strength) (CC and) (NN defense)))))) (. .)))