Task: Text Categorization
Input (English): Publishing sequences of this type of poem became popular in England after the publication of Sir Philip Sidney's Astrophel and Stella. In this type of poem, the volta, or turn, often comes in the ninth line. One poet wrote primarily in his own form of this style to his love Laura. Another writer who names a form of this type of poem wrote ones including ""My mistress' eyes are nothing like the sun"" and ""Shall I compare thee to a summer's day. "" For 10 points, name this poetic form used by Petrarch and Shakespeare, consisting of fourteen lines.
Output (English): Literature