, to his giggles parents <apostrophe><apostrophe> that try the surfer , on slept navy .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (ATS_0 (COMMA_0 ,) (PP_2 (TO_0 to) (NP_3 (ATNP_0 (PRPDOLLAR_0 his) (NNS_0 giggles)) (NNS_0 parents)))) (APOSTROPHE_0 <apostrophe><apostrophe>)) (NP_0 (DT_1 that))) (VP_3 (ATVP_3 (ATVP_2 (VB_0 try) (NP_4 (DT_0 the) (NN_2 surfer))) (COMMA_0 ,)) (PP_2 (IN_0 on) (NP_3 (NNP_1 slept) (NN_3 navy))))) (DOT_0 .)))