Task: Explanation
Input (English): Theon Greyjoy is a fictional character in the "A Song of Ice and Fire" series of fantasy novels by American author George R. R. Martin, and its television adaptation "Game of Thrones". Theon is the son and heir of Balon Greyjoy, taken as a ward by Lord Eddard Stark following Balon's failed rebellion. Question: What English actor portrays the ward taken in by Lord Eddard Stark in the HBO adaptation of the fantasy novel series "A Song of Ice and Fire"? Answer: Alfie Allen
Output (English): Theon Greyjoy is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin, and its television adaptation Game of Thrones.