(S (S (BASENP (NNP Australia)) (VP (VP (VP (VBZ operates) (BASENP (DT a) (NN detention) (NN center))) (PP (IN in) (BASENP (NNP Nauru)))) (S (VP (TO to) (VP (VB process) (NP (BASENP (NNS people)) (VP (VP (VBN intercepted) (PP (IN at) (BASENP (NN sea)))) (SBAR (IN while) (S (VP (VBG trying) (S (VP (TO to) (VP (VP (VB reach) (BASENP (NNP Australia))) (ADVP (RB illegally))))))))))))))) (PERIOD .))