about The forested sky by class , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (IN_0 about) (NP_3 (NP_6 (ATNP_1 (DT_0 The) (JJ_1 forested)) (NN_1 sky)) (PP_0 (IN_1 by) (NP_2 (NN_3 class))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))