What concepts are described in the following sentence?

"John Roberts is the Chief Justice of the USA which is lead by the President. 250 Delaware Avenue is located in the country which uses the English language and where one of the ethnic groups are White Americans."

Return the answer as pairs of triples.
United States LANGUAGE English language
United States LEADER_TITLE President of the United States
United States LEADER_NAME John Roberts
250 Delaware Avenue LOCATION United States
United States ETHNIC_GROUP White Americans