relic from a bygone era , and its convolutions ... 
(ROOT (NP (NP (NN relic)) (PP (IN from) (NP (NP (DT a) (JJ bygone) (NN era)) (, ,) (CC and) (NP (PRP$ its) (NNS convolutions)))) (. ...)))
(ROOT (NP (NP (NN )) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (, ) (CC ) (NP (PRP$ ) (NNS )))) (. )))