(S (S (PP (IN As) (BASENP (DT a) (NN result))) (COMMA ,) (S (BASENP (DT the) (NN boy)) (VP (VP (VBD suffered) (BASENP (JJ severe) (NN frostbite))) (PP (IN in) (NP (BASENP (DT both)) (PP (IN of) (BASENP (PRPD his) (NNS hands)))))))) (PERIOD .))