Create a set of triples that describes the content in the following sentence.

A Wizard of Wars originates from the United States where Barack Obama is the leader and African Americans are an ethnic Group. The book is written in English which is a language spoken in Great Britain.
United States ETHNIC_GROUP African Americans
United States LEADER_NAME Barack Obama
A Wizard of Mars LANGUAGE English language
English language SPOKEN_IN Great Britain
A Wizard of Mars COUNTRY United States