the structure is simple , but in its own way , rabbit-proof fence is a quest story as grand as the lord of the rings 
(ROOT (S (S (NP (DT the) (NN structure)) (VP (VBZ is) (ADJP (JJ simple)))) (, ,) (CC but) (S (PP (IN in) (NP (PRP$ its) (JJ own) (NN way))) (, ,) (NP (NML (NN rabbit) (HYPH -) (NN proof)) (NN fence)) (VP (VBZ is) (NP (NP (DT a) (NN quest) (NN story)) (ADJP (ADJP (RB as) (JJ grand)) (PP (IN as) (NP (NP (DT the) (NN lord)) (PP (IN of) (NP (DT the) (NNS rings)))))))))))
(ROOT (S (S (NP (DT ) (NN )) (VP (VBZ ) (ADJP (JJ )))) (, ) (CC ) (S (PP (IN ) (NP (PRP$ ) (JJ ) (NN ))) (, ) (NP (NML (NN ) (HYPH ) (NN )) (NN )) (VP (VBZ ) (NP (NP (DT ) (NN ) (NN )) (ADJP (ADJP (RB ) (JJ )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NNS )))))))))))