Which episode of Game of Thrones does Dany go to the House of the Undying?
Daenerys Targaryen visits the House of the Undying in season two, episode five ("Harrenhal")
Instruction: Which episode of Game of Thrones does Dany go to the House of the Undying?
Context: 
Response: Daenerys Targaryen visits the House of the Undying in season two, episode five ("Harrenhal")