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)))) (. .)))
Consider a study of first graders' academic and social skills in relation to their mothers' employment. 
( ( ( Consider ( ( a study ) ( of ( ( ( first ( graders ' ) ) ( ( ( academic and ) social ) skills ) ) ( in relation ) ) ) ) ) ( to ( ( their ( mothers ' ) ) employment ) ) ) . )
(ROOT (S (VP (VB Consider) (NP (NP (DT a) (NN study)) (PP (IN of) (NP (NP (NP (JJ first) (NNS graders) (POS ')) (ADJP (JJ academic) (CC and) (JJ social)) (NNS skills)) (PP (IN in) (NP (NN relation)))))) (PP (TO to) (NP (NP (PRP$ their) (NNS mothers) (POS ')) (NN employment)))) (. .)))