The majority of Julius Caesar is written in poetry. The first scene is mixed, with commoners speaking prose and Tribunes lecturing them in verse. The rest of the play is entirely in verse. Caesar himself is called a "heroic poem". This means that he is written in iambic pentameter, a poetic metre that uses five pairs of metered lines containing five feet each: an iambus (or stressed syllable) followed by a dactyl (or unstressed syllable), as in today's popular song "I'm Just A Bill". By contrast, a typical sonnet has 14 lines of six syllables without any stressed or unstressed syllables. Poetry is used for narrative purposes, especially when discussing events from history. It is important to note that in Latin literature, epic poems were often told in prose but illustrated with poetry. For example, Lucan's Pharsalia is narrated in prose but includes many pictures that explain things that would not be possible to write down in full detail. Another advantage of using poetry is that poets can use alliteration and other techniques to make their poetry sound more interesting and appealing to read. As well as making certain words sound similar they can also be placed at the beginning or end of lines for effect.