(S (S (S (S (NP (BASENP (DT The) (JJ 15-year-old) (NN suspect) (POS 's)) (BASENP (NN home) (CC and) (NNS computers))) (VP (VBD were) (VP (VBN searched)))) (CC and) (S (BASENP (NN evidence)) (VP (VBD was) (VP (VBN collected))))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD revealed) (SBAR (IN that) (S (BASENP (PRP he)) (VP (ADVP (RB allegedly)) (VP (VBD tried) (S (VP (TO to) (VP (VP (VB purchase) (NP (BASENP (JJ black) (NN powder) (NNS explosives)) (CC and) (BASENP (NN machine) (NNS guns)))) (PP (IN over) (BASENP (DT the) (NN Internet)))))))))))))) (PERIOD .))