In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

Context: Dreibelbis Mill is a historic grist mill located in Perry Township Berks County Pennsylvania. The mill was built in 1854 and is a 2 1/2-story brick building on a banked stone basement. The mill remained in operation until 1985. After 1944 it was powered by a diesel engine.It was listed on the National Register of Historic Places in 1990.
Question: The document can be classified to which topic?
Options: 1)Building, 2)Album, 3)Plant, 4)Village, 5)EducationalInstitution
1