(S (S (BASENP (PRP It)) (VP (VP (VBD was) (NP (BASENP (DT the) (NN practice)) (PP (IN of) (BASENP (DT the) (JJ Greco-Roman) (NN era))))) (S (VP (TO to) (VP (VP (VB assemble) (NP (BASENP (DT the) (NNS tombs)) (PP (IN of) (NP (NP (BASENP (NNS persons)) (PP (IN of) (BASENP (NN status)))) (CC and) (BASENP (JJ other) (JJ high) (NN ranking) (NNS officials)))))) (PP (IN near) (BASENP (PRPD their) (NNS rulers)))))))) (PERIOD .))