Parental oversight and involvement in children's TV viewing are essential for two reasons.
( ( ( Parental ( ( oversight and ) involvement ) ) ( in ( ( children 's ) ( TV viewing ) ) ) ) ( ( are ( essential ( for ( two reasons ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Parental) (NN oversight) (CC and) (NN involvement)) (PP (IN in) (NP (NP (NNS children) (POS 's)) (NN TV) (NN viewing)))) (VP (VBP are) (ADJP (JJ essential) (PP (IN for) (NP (CD two) (NNS reasons))))) (. .)))
They should supervise their children's viewing habits because studies show children love watching X-rated films at midnight.
( They ( ( should ( ( supervise ( ( their ( children 's ) ) ( viewing habits ) ) ) ( because ( studies ( show ( children ( love ( ( watching ( X-rated films ) ) ( at midnight ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (MD should) (VP (VB supervise) (NP (NP (PRP$ their) (NNS children) (POS 's)) (VBG viewing) (NNS habits)) (SBAR (IN because) (S (NP (NNS studies)) (VP (VBP show) (SBAR (S (NP (NNS children)) (VP (VBP love) (S (VP (VBG watching) (NP (JJ X-rated) (NNS films)) (PP (IN at) (NP (NN midnight))))))))))))) (. .)))