(S (S (BASENP (DT Each) (NN one)) (VP (VP (VBD had) (VP (VBN been) (VP (VBN blind-folded)))) (CC and) (VP (VBD had) (S (BASENP (PRPD their) (NNS hands)) (VP (VBN tied) (PP (IN behind) (BASENP (PRPD their) (NN back)))))))) (PERIOD .))