premise: Rock House, also known as the John Martin House, is a historic home located near King, Stokes County, North Carolina. It was built about 1785, and is a two-story, fieldstone ruin. It has been a ruin since the late-19th century. It is believed to have been built by Colonel John Martin, an early landowner in Stokes County. The property is maintained by the Stokes County Historical Society.
hypothesis: Rock House and the John Martin House are maintained by two different historical societies.
reason: The two names are synonymous for the same house, so they are both maintained by the same historical society.  