Q:Slack Farmstead is a historic farm complex and national historic district located at Mexico in Oswego County New York. The district includes four contributing structures; the farmhouse a dairy barn (1870) granary (c. 1850) and a hen house (c. 1910). Also on the property are a contributing stone wall hand-dug well and farm pond. The farmhouse is a five-bay 1 12-story frame building with a gable roof built about 1838.It was listed on the National Register of Historic Places in 1991. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Building