(S (S (NP (BASENP (DT A) (NN statement)) (PP (IN from) (NP (BASENP (NNP Iran) (POS 's)) (BASENP (NNP Revolutionary) (NNPS Guards))))) (VP (VBD said) (SBAR (IN that) (S (PRN (COMMA ,) (PP (IN after) (BASENP (NN investigation))) (COMMA ,)) (S (BASENP (PRP it)) (VP (VBD reached) (NP (BASENP (DT the) (NN conclusion)) (SBAR (IN that) (S (BASENP (PRPD their) (JJ illegal) (NN entry)) (VP (VBD was) (BASENP (DT a) (NN mistake)))))))))))) (PERIOD .))