I so might be the hill heavy , when luggage was down of one house .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (PRP_0 I)) (ADVP_0 (RB_0 so))) (VP_3 (MD_0 might) (VP_1 (VB_0 be) (NP_1 (NP_5 (DT_0 the) (NN_2 hill)) (ADJP_0 (ATADJP_0 (JJ_1 heavy) (COMMA_0 ,)) (SBAR_0 (WHADVP_0 (WRB_0 when)) (S_1 (NP_0 (NN_2 luggage)) (VP_5 (ATVP_3 (VBD_2 was) (PRT_0 (RP_0 down))) (PP_0 (IN_1 of) (NP_2 (CD_0 one) (NN_2 house))))))))))) (DOT_0 .)))