Plus the boiled seat at the lesson heard .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (CC_0 Plus) (NP_1 (NP_6 (ATNP_1 (DT_0 the) (JJ_1 boiled)) (NN_1 seat)) (PP_0 (IN_1 at) (NP_5 (DT_0 the) (NN_2 lesson))))) (VP_3 (VBD_0 heard))) (DOT_0 .)))