The kids into schoolhouse kids knew seven-hour side .
(ROOT_0 (S_0 (ATS_3 (NP_1 (NP_6 (DT_0 The) (NNS_1 kids)) (PP_0 (IN_1 into) (NP_4 (JJ_1 schoolhouse) (NNS_1 kids)))) (VP_4 (VBD_0 knew) (NP_3 (JJ_1 seven-hour) (NN_0 side)))) (DOT_0 .)))