[['United States', 'LEADER_TITLE', 'President of the United States'], ['United States', 'LEADER_NAME', 'Joe Biden'], ['250 Delaware Avenue', 'LOCATION', 'United States'], ['United States', 'ETHNIC_GROUP', 'Asian Americans']]
250 Delaware Avenue is located in the United States (with an important ethnic group being Asian Americans), led by the President of the United States and also with Joe Biden in a leadership role.