rtokens: NYMEX will be closed Monday due to Labor Day .
pos: NN NN IN NN VBD RB VB JJ NN TO VB PRP RB RBR IN JJ NNS VBD VBN RB TO VB DT NNP NNP NN NN , NNS VBD .
tokens: Buying interest in crude did not have enough conviction to send it much higher since many players had left early to start the Labor Day holiday weekend , traders said .
ltokens: October crude stood eight cents higher at $ 22.23 barrel .