you left then because up beak classes , <apostrophe><apostrophe> he was Pura .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (ATS_2 (ATS_0 (S_1 (NP_0 (PRP_1 you)) (VP_5 (VBD_2 left) (PP_2 (ATPP_0 (ADVP_0 (RB_0 then)) (IN_2 because)) (PP_2 (IN_0 up) (NP_3 (NN_0 beak) (NNS_1 classes)))))) (COMMA_0 ,)) (APOSTROPHE_0 <apostrophe><apostrophe>)) (NP_0 (PRP_1 he))) (VP_3 (VBD_0 was) (NP_3 (NNP_1 Pura)))) (DOT_0 .)))