<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: 'Every once in a while , authors leave behind a trace that allows us to attribute not only similar apps , but also multiple different PHA families to the same group or person .' [/INST] [Every:O, once:O, in:O, a:O, while:O, ,:O, authors:O, leave:O, behind:O, a:O, trace:O, that:O, allows:O, us:O, to:O, attribute:O, not:O, only:O, similar:O, apps:O, ,:O, but:O, also:O, multiple:O, different:O, PHA:O, families:O, to:O, the:O, same:O, group:O, or:O, person:O, .:O] </s>