because two knees beckoning the surfer back , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (IN_2 because) (S_1 (NP_0 (CD_0 two) (NNS_0 knees)) (VP_5 (ATVP_4 (VBG_0 beckoning) (NP_5 (DT_0 the) (NN_2 surfer))) (ADVP_0 (RB_0 back))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))