(S (S (PP (IN In) (NP (BASENP (NNP February)) (BASENP (NN 2008)))) (COMMA ,) (S (BASENP (DT the) (NN shelf)) (VP (VP (VBD lost) (NP (NP (BASENP (NN 425) (NN square) (NNS kilometres)) (PRN (LRB -LRB-) (BASENP (NN 164) (NN square) (NNS miles)) (RRB -RRB-))) (PP (IN of) (BASENP (NN ice))))) (COMMA ,) (VP (VBN followed) (PP (IN by) (NP (NP (BASENP (DT a) (NN loss)) (PP (IN of) (BASENP (DT another) (NN 62) (NN square) (NNS miles)))) (PP (IN in) (NP (BASENP (NNP May)) (BASENP (NN 2008)))))))))) (PERIOD .))