Fourteen lines.
14 lines in a sonnet
A sonnet is an example of a poem.
Sonnet
All of the prologue, taken as a whole, is a sonnet. A sonnet is a fourteen-line poem with a certain structure. The Prologue is fourteen lines long and has that structure.
A sonnet IS a poem. Not a part in one. If you had just used google you'd of known that immediately.
Sonnet
The last couplet of the sonnet says that the subject of the poem will live until judgment day, therefore, forever. However, the whole poem speaks of the immortality of the subject of the poem, and of the words themselves.
It's a sonnet of course.
A sonnet is a quatorzain, or a 14-line poem.
A fourteen line poem in iambic pentameter (in English) is very likely to be a sonnet. It isn't guaranteed to be a sonnet - but the first thing you check is whether it is a sonnet or not.
A sonnet.'