[['United States', 'ETHNIC_GROUP', 'African Americans'], ['United States', 'LEADER_NAME', 'Barack Obama'], ['A Wizard of Mars', 'LANGUAGE', 'English language'], ['A Wizard of Mars', 'COUNTRY', 'United States']]
A Wizard of Mars was written in English and published in the United States. The United States is led by Barack Obama and has African Americans as one of its ethnic groups.