When we consider how much the set is on during school holidays and summer vacations, children spend more time watching TV than they do in any other waking activity, including going to school and interacting with family members or peers.
( ( When ( we ( consider ( ( how much ) ( ( the set ) ( is ( on ( during ( school ( holidays ( and ( summer vacations ) ) ) ) ) ) ) ) ) ) ) ) ( , ( children ( ( ( spend ( more time ) ) ( ( ( ( ( ( watching TV ) ( than ( they ( do ( in ( any ( other ( waking activity ) ) ) ) ) ) ) ) , ) ( including ( going ( to school ) ) ) ) and ) ( interacting ( with ( family ( ( members or ) peers ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (PRP we)) (VP (VBP consider) (SBAR (WHADJP (WRB how) (JJ much)) (S (NP (DT the) (NN set)) (VP (VBZ is) (PP (IN on) (PP (IN during) (NP (NN school) (NNS holidays) (CC and) (NN summer) (NNS vacations)))))))))) (, ,) (NP (NNS children)) (VP (VBP spend) (NP (JJR more) (NN time)) (S (VP (VP (VBG watching) (NP (NN TV)) (SBAR (IN than) (S (NP (PRP they)) (VP (VBP do) (PP (IN in) (NP (DT any) (JJ other) (NN waking) (NN activity))))))) (, ,) (VP (VBG including) (S (VP (VBG going) (PP (TO to) (NP (NN school)))))) (CC and) (VP (VBG interacting) (PP (IN with) (NP (NN family) (NNS members) (CC or) (NNS peers))))))) (. .)))
TV is king when it comes to how children spend their time. 
( TV ( ( is ( king ( when ( it ( comes ( to ( how ( children ( spend ( their time ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP TV)) (VP (VBZ is) (NP (NP (NN king)) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (VBZ comes) (PP (TO to) (SBAR (WHADVP (WRB how)) (S (NP (NNS children)) (VP (VBP spend) (NP (PRP$ their) (NN time))))))))))) (. .)))