(S (NP (NP (BASENP (DT The) (NNS spies)) (VP (VBN arrested) (PP (IN by) (BASENP (DT the) (NNP US))))) (BASENP (DT all))) (VP (VBD pled) (ADVP (RB guilty) (PP (TO to) (NP (BASENP (NNS charges)) (PP (IN of) (QT (DQL ``) (QTC (NP (BASENP (NN conspiracy)) (SBAR (S (VP (TO to) (VP (VB act) (PP (IN as) (NP (BASENP (DT an) (JJ unregistered) (NN agent)) (PP (IN of) (BASENP (DT a) (JJ foreign) (NN country)))))))))) (PERIOD .)) (DQR ''))))))))