Question 2 Twitterlyzer: 20 marks This question is based on the social network site Twitter. Twitter is an online news and social networking service where users post and interact with messages called "tweets", restricted to 140 characters [Wikipedia] Some useful terms: . Tweet is a message posted on Twitter that is between 1 and 140 characters long (inclusive). For this assignment, we assume that a tweet can have a minimum of 1 and a maximum of 60 characters only . Username is the name of a Twitter user. For example, michelleobama is a username. For this assignment, any text without spaces is a valid username. . Mention is a tweet that includes the character @. followed by username. For example, the tweet prince Harry and @michelleobama is a mention of the Twitter user michelleobama. mentioning the other user. For example, @michelleobama, reply you are always right! is a