<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: 'Content observers : use Android 's ContentObserver framework to gather changes in SMS , Calendar , Contacts , Cell info , Email , WhatsApp , Facebook , Twitter , Kakao , Viber , and Skype .' [/INST] [Content:O, observers:O, ::O, use:O, Android:B-System, 's:O, ContentObserver:O, framework:O, to:O, gather:O, changes:O, in:O, SMS:B-System, ,:O, Calendar:B-System, ,:O, Contacts:B-System, ,:O, Cell:B-System, info:I-System, ,:O, Email:B-System, ,:O, WhatsApp:B-System, ,:O, Facebook:B-System, ,:O, Twitter:B-System, ,:O, Kakao:B-System, ,:O, Viber:B-System, ,:O, and:O, Skype:B-System, .:O] </s>