SWEET Ontology
type: Ontology
version info: 2.3
imports: humanTransportation.owl
imports: matr.owl
imports: realmAstroBody.owl
imports: rela.owl
imports: relaHuman.owl
imports: realm.owl

Aircraft
type: Class
subclass of: Equipment
subclass of: Restriction
  all values from: Atmosphere
  on property: hasRealm
comment: An aircraft is a vehicle which is able to fly through the air (or through any other atmosphere). All the human activity which surrounds aircraft is called aviation. (Most rocket vehicles are not aircraft because they are not supported by the surrounding air).

Borehole
type: Class
subclass of: Equipment
comment: A borehole is the generalised term for any narrow shaft drilled in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes including the extraction of water or fluid (such as oil) or gases (such as natural gas or methane), as part of a geotechnical investigation or environmental site assessment, for mineral exploration, or as a pilot hole for installing piers or underground utilities.

Well
type: Class
subclass of: Equipment
comment: A bored, drilled or driven shaft, or a dug hole, whose depth is greater than the largest surface dimension.