Sentence: A Wizard of Mars was published in the United States and written in English which is also spoken in Great Britain. The United States has the ethnic group Asian Americans and the leader is known as the President.

What structured data could we extract from this sentence?
United States, leaderTitle, President of the United States; A Wizard of Mars, language, English language; English language, spokenIn, Great Britain; United States, ethnicGroup, Asian Americans; A Wizard of Mars, country, United States