(QT (DQL ``) (QTC (S (SBAR (WHADVP (WRB When)) (S (BASENP (NNS workers)) (VP (VP (VBP take) (PRT (RP off))) (BASENP (PRPD their) (NN cotton) (NNS gloves))))) (COMMA ,) (S (BASENP (PRPD their) (NNS hands)) (VP (VBP are) (VP (VBN covered) (PP (IN with) (BASENP (NN aluminum) (NN dust))))))) (PERIOD .)) (DQR ''))