(S (S (NP (NP (BASENP (DT The) (NNP University)) (PP (IN of) (BASENP (NNP California)))) (COMMA ,) (BASENP (NNP Berkeley))) (VP (VBD announced) (SBAR (IN that) (S (NP (NP (BASENP (NN one)) (PP (IN of) (BASENP (PRPD its) (NN graduate) (NNS students)))) (PRN (COMMA ,) (BASENP (NNP Michael) (NNP Park)) (COMMA ,))) (VP (VP (VBD rediscovered) (PP (IN on) (BASENP (NNP May) (NN 24)))) (NP (BASENP (DT the) (NNP Mount) (NNP Diablo) (NN buckwheat)) (COMMA ,) (NP (BASENP (DT a) (NN plant)) (VP (VP (ADVP (RB not)) (VP (VBN sighted) (PP (IN since) (BASENP (NN 1936))))) (CC and) (VP (VBN believed) (S (VP (TO to) (VP (VB have) (VP (VBN been) (ADJP (JJ extinct))))))))))))))) (PERIOD .))