as he piled sitting hulking a schoolhouse from the gravel streaming perch at heart , <apostrophe><apostrophe>
(ROOT_0 (S_0 (ATS_2 (SBAR_0 (IN_2 as) (S_1 (NP_0 (PRP_1 he)) (VP_5 (VBD_1 piled) (VP_2 (VBG_0 sitting) (S_2 (VP_0 (ATVP_4 (VBG_0 hulking) (NP_5 (DT_0 a) (NN_2 schoolhouse))) (PP_2 (IN_0 from) (NP_3 (NP_6 (ATNP_1 (ATNP_0 (DT_0 the) (NN_3 gravel)) (NN_0 streaming)) (NN_1 perch)) (PP_0 (IN_1 at) (NP_5 (NN_3 heart))))))))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)))