by A up knoll of the thick cluster , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (IN_0 by) (NP_3 (NP_6 (ATNP_1 (DT_0 A) (ADJP_0 (RP_0 up))) (NN_1 knoll)) (PP_0 (IN_1 of) (NP_2 (ATNP_1 (DT_0 the) (JJ_1 thick)) (NN_1 cluster))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))