Consider a study of the relationship of maternal employment to first graders' academic and social competence.
( ( ( Consider ( ( a study ) ( of ( ( the relationship ) ( of ( maternal employment ) ) ) ) ) ) ( to ( ( first ( graders ' ) ) ( ( ( academic and ) social ) competence ) ) ) ) . )
(ROOT (S (VP (VB Consider) (NP (NP (DT a) (NN study)) (PP (IN of) (NP (NP (DT the) (NN relationship)) (PP (IN of) (NP (JJ maternal) (NN employment)))))) (PP (TO to) (NP (NP (JJ first) (NNS graders) (POS ')) (ADJP (JJ academic) (CC and) (JJ social)) (NN competence)))) (. .)))
A study of the relationship between working fathers and high-performing pre schoolers.
( ( ( A study ) ( of ( ( the relationship ) ( between ( working ( ( ( fathers and ) high-performing ) pre ) ) ) ) ) ) ( schoolers . ) )
(ROOT (S (NP (NP (DT A) (NN study)) (PP (IN of) (NP (NP (DT the) (NN relationship)) (PP (IN between) (S (VP (VBG working) (NP (ADJP (JJ fathers) (CC and) (JJ high-performing)) (NN pre)))))))) (VP (VBZ schoolers)) (. .)))