Task: Text Categorization
Input (English): After a succession dispute with his rival Arthur, the Duke of Brittany, this rulers right to take the throne was recognized by the Treaty of Le Goulet. An international alliance he established was soundly defeated at the Battle of Bouvines, while he was forced to agree to terms with the legate Pandulf after his refusal to accept Stephen Langton as Archbishop resulted in a papal interdiction. The last years of his reign were spent fighting the forces of Louis VIII, who invaded England at the behest of this kings barons after he renounced some concessions forced upon him at Runnymede. For ten points, name this King of England who signed the Magna Carta.
Output (English): History