<prompt> Translate the following text to EnglishKituo cha tatu katika tatu ya dhahabu ya sanaa, alama ya zamani ya Madrid, ni Hospitali ya San Carlos C. Santa Isabel 52, ambayo sasa ina Centro de Arte Reina Sofia.  <response>: The third anchor in the golden art trio, a landmark of old Madrid, is the Hospital de San Carlos c Santa Isabel 52, which now houses the Centro de Arte Reina Sofia. 