(S (S (BASENP (DT The) (NNP Swedish) (NNPS Navy)) (VP (VBP have) (VP (VBN released) (NP (BASENP (DT a) (NN picture)) (PP (VBG regarding) (NP (NP (BASENP (DT a) (JJ foreign) (NN submarine)) (VP (VBN discovered) (PP (IN in) (NP (BASENP (DT the) (NNP Saltsjöbaden) (NN river)) (PP (IN of) (NP (BASENP (NNP Lake) (NNP Mälaren)) (PP (IN in) (NP (BASENP (NNP Stockholm)) (COMMA ,) (NP (BASENP (DT the) (NN capital) (NN city)) (PP (IN of) (BASENP (NNP Sweden)))))))))))) (COMMA ,) (VP (VBN situated) (PP (IN on) (NP (BASENP (DT the) (JJ western) (NN coast)) (PP (IN of) (BASENP (DT the) (NNP Baltic) (NNP Sea)))))))))))) (PERIOD .))