Sir James's presence in Manchester was not accidental.
( ( ( ( Sir ( James 's ) ) presence ) ( in Manchester ) ) ( ( ( was not ) accidental ) . ) )
(ROOT (S (NP (NP (NP (NNP Sir) (NNP James) (POS 's)) (NN presence)) (PP (IN in) (NP (NNP Manchester)))) (VP (VBD was) (RB not) (ADJP (JJ accidental))) (. .)))
Sir James was present in Manchester on purpose.
( ( Sir James ) ( ( ( was ( present ( in Manchester ) ) ) ( on purpose ) ) . ) )
(ROOT (S (NP (NNP Sir) (NNP James)) (VP (VBD was) (ADJP (JJ present) (PP (IN in) (NP (NNP Manchester)))) (PP (IN on) (NP (NN purpose)))) (. .)))