they shaking warm afraid <apostrophe>s studied under the surfer off the navy .
(ROOT_0 (S_0 (ATS_3 (NP_0 (PRP_1 they)) (VP_2 (VBG_0 shaking) (NP_2 (NP_4 (ATNP_0 (JJ_0 warm) (JJ_1 afraid)) (POS_0 <apostrophe>s)) (VP_2 (VBN_0 studied) (PP_2 (IN_0 under) (NP_3 (NP_5 (DT_0 the) (NN_2 surfer)) (PP_0 (IN_1 off) (NP_5 (DT_0 the) (NN_2 navy))))))))) (DOT_0 .)))