The crucial part of that world is the home where parents relate to children.
( ( ( The ( crucial part ) ) ( of ( that world ) ) ) ( ( is ( ( the home ) ( where ( parents ( relate ( to children ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ crucial) (NN part)) (PP (IN of) (NP (DT that) (NN world)))) (VP (VBZ is) (NP (NP (DT the) (NN home)) (SBAR (WHADVP (WRB where)) (S (NP (NNS parents)) (VP (VBP relate) (PP (TO to) (NP (NNS children)))))))) (. .)))
Parents relating to children in the home is important to the world.
( ( Parents ( relating ( to ( children ( in ( the home ) ) ) ) ) ) ( ( is ( important ( to ( the world ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Parents)) (VP (VBG relating) (PP (TO to) (NP (NP (NNS children)) (PP (IN in) (NP (DT the) (NN home))))))) (VP (VBZ is) (ADJP (JJ important) (PP (TO to) (NP (DT the) (NN world))))) (. .)))