(S (S (S (NP (BASENP (DT The) (NN ride) (POS 's)) (BASENP (JJ new) (NN operator))) (VP (PRN (COMMA ,) (ADJP (JJ unaware) (PP (IN of) (NP (BASENP (NNP Garin) (POS 's)) (NN presence)))) (COMMA ,)) (VP (VBD started) (BASENP (DT the) (NN ride))))) (SBAR (IN while) (S (BASENP (NNP Garin)) (VP (VP (VBD was) (ADVP (RB still))) (PP (IN on) (BASENP (PRP it))))))) (PERIOD .))