Instruction: What is "A Song of Ice and Fire"?

Response: "A Song of Ice and Fire" is a medieval fantasy book series created by an American author George R.R. Martin who has been coined the American J.R.R. Tolkien.

It consists of five books published so far:
- "A Game Of Thrones"
- "A Clash Of Kings"
- "A Storm of Swords"
- "A Feast for Crows"
- "A Dance with Dragons" 

The series remains unfinished with the last two books in the series still unpublished:
- "The Winds Of Winter"
- "A Dream Of Spring"