United States ETHNIC_GROUP African Americans
United States LEADER_TITLE President of the United States
English language SPOKEN_IN Great Britain
United States LANGUAGE English language
A Wizard of Mars COUNTRY United States
A Wizard of Mars originates from the United States where English is spoken (as in Great Britain), and the leader is called the President. African Americans are one of the ethnic groups of the United States, where the capital city is Washington D.C.