So, I have my sister's kid here and I'm going to kill him underneath this vehicle shortly.
( So ( , ( ( ( ( I ( have ( ( ( my ( sister 's ) ) kid ) here ) ) ) and ) ( I ( 'm ( going ( to ( ( ( kill him ) ( underneath ( this vehicle ) ) ) shortly ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB So)) (, ,) (S (NP (PRP I)) (VP (VBP have) (NP (NP (NP (PRP$ my) (NN sister) (POS 's)) (NN kid)) (ADVP (RB here))))) (CC and) (S (NP (PRP I)) (VP (VBP 'm) (VP (VBG going) (S (VP (TO to) (VP (VB kill) (NP (PRP him)) (PP (IN underneath) (NP (DT this) (NN vehicle))) (ADVP (RB shortly)))))))) (. .)))
I am going to run over my sister's kid. 
( I ( ( am ( going ( to ( run ( over ( ( my ( sister 's ) ) kid ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP am) (VP (VBG going) (S (VP (TO to) (VP (VB run) (PP (IN over) (NP (NP (PRP$ my) (NN sister) (POS 's)) (NN kid)))))))) (. .)))