thurman and lewis give what can easily be considered career-best performances 
(ROOT (S (NP (NNP thurman) (CC and) (NNP lewis)) (VP (VBP give) (SBAR (WHNP (WP what)) (S (VP (MD can) (ADVP (RB easily)) (VP (VB be) (VP (VBN considered) (S (NP (ADJP (NN career) (HYPH -) (JJS best)) (NNS performances)))))))))))
(ROOT (S (NP (NNP ) (CC ) (NNP )) (VP (VBP ) (SBAR (WHNP (WP )) (S (VP (MD ) (ADVP (RB )) (VP (VB ) (VP (VBN ) (S (NP (ADJP (NN ) (HYPH ) (JJS )) (NNS )))))))))))