(S (S (S (NP (BASENP (DT A) (NN grandfather)) (CC and) (BASENP (PRPD his) (NN grandson))) (VP (VBP have) (VP (VBN died) (PP (IN off) (NP (BASENP (DT the) (NN coast)) (PP (IN of) (NP (BASENP (NNP North) (NNP Wales)) (COMMA ,) (BASENP (NNP UK))))))))) (COMMA ,) (SBAR (IN after) (S (BASENP (PRPD their) (NN sailing) (NN dinghy)) (VP (VBD was) (VP (VP (VBN overwhelmed) (CC and) (VBN capsized)) (PP (IN in) (BASENP (JJ rough) (NNS seas)))))))) (PERIOD .))