else classes as the schoolhouse cluster , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (PP_2 (ATPP_0 (ADVP_0 (RB_1 else) (NP_4 (NNS_1 classes))) (IN_2 as)) (NP_6 (ATNP_1 (DT_0 the) (JJ_1 schoolhouse)) (NN_1 cluster))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))