Sentence: Auburn is part of King County in Washington, U.S, whose capital is Washington, D.C. Seattle is the largest city in King County.

What structured data could we extract from this sentence?
Auburn, Washington, isPartOf, Washington (state); United States, capital, Washington, D.C.; King County, Washington, country, United States; Auburn, Washington, isPartOf, King County, Washington; King County, Washington, largestCity, Seattle