<s>[INST] You are a cybersecurity and NLP expert tasked with named entity extraction. You need to provide the named entities for each token in the given sentence. You will be penalized for incorrect predictions. Identify the entities for the following sentence: 'A big chunk of data is extracted from the portable executable ( PE ) file itself and decrypted two times using a custom XOR algorithm .' [/INST] [A:O, big:O, chunk:O, of:O, data:O, is:O, extracted:O, from:O, the:O, portable:O, executable:O, (:O, PE:O, ):O, file:O, itself:O, and:O, decrypted:O, two:O, times:O, using:O, a:O, custom:O, XOR:O, algorithm:O, .:O] </s>