Question: The Old Federal Building in Fairbanks was built by William "Mac" MacDonald, who also later built the Federal Building in a city that was incorporated on what date?
Sentence (from "Nome, Alaska"): Nome ( , "Siqnazuaq" in Iñupiaq) is a city in the Nome Census Area in the Unorganized Borough of the U.S. state of Alaska.
Relevant evidence: Yes