the friend , friends unmistakably was climbing a road .
(ROOT_0 (S_0 (ATS_3 (ATS_1 (NP_1 (ATNP_0 (NP_0 (DT_0 the) (NN_2 friend)) (COMMA_0 ,)) (NNS_0 friends)) (ADVP_0 (RB_0 unmistakably))) (VP_3 (VBD_1 was) (VP_2 (VBG_0 climbing) (NP_5 (DT_0 a) (NN_2 road))))) (DOT_0 .)))