Task: Class Definition Understanding (ontology: Arts_Media_Entertainment/CIDOC_CRM)

Which of the following definitions best describes 'E26 Physical Feature'?

A. Scope note:
This class comprises all persistent physical items of any size that are purposely created by human activity. This class comprises, besides others, human-made objects, such as a sword, and human-made features, such as rock art. For example, a “cup and ring” carving on bedrock is regarded as instance of the concept.
Instances of the concept may be the result of modifying pre-existing physical things, preserving larger parts or most of the original matter and structure, which poses the question if they are new or even human-made, the respective interventions of production made on such original material should be obvious and sufficient to regard that the product has a new, distinct identity and intended function and is human-made. Substantial continuity of the previous matter and structure in the new product can be documented by describing the production process also as an instance of E81 Transformation.
Whereas interventions of conservation and repair are not regarded to produce a new instance of the concept, the results of preparation of natural history specimens that substantially change their natural or original state should be regarded as instances of E24 Physical Human-Made Things, including the uncovering of petrified biological features from a solid piece of stone. On the other side, scribbling a museum number on a natural object should not be regarded to make it human-made. This notwithstanding, parts, sections, segments, or features of an instance of the concept may continue to be non-human-made and preserved during the production process, for example natural pearls used as a part of an eardrop.

Examples:
- the Forth Railway Bridge (Shipway, Bouch, Baker and Fowler, 1990).
- the Channel Tunnel (E25) (Holliday, Marcou and Vickerman, 1991)
- the Palace of Knossos (Evans, 1921)
- the Colosseum in Rome, Italy (Hopkins and Beard, 2011)
- the Historical Collection of the Museum Benaki in Athens (E78) (Georgoula, 2005)
- the Rosetta Stone (E22)
- my paperback copy of Crime & Punishment (E22) (fictitious)
- the computer disk at ICS-FORTH that stores the canonical Definition of the CIDOC CRM v.3.2 (E22)
- my empty DVD disk (E22) (fictitious)

In First Order Logic:
- E24(x) ⇒ E18(x)
- E24(x) ⇒ E71(x)
B. Scope note:
This class comprises physical features that are purposely created by human activity, such as scratches, artificial caves, artificial water channels, etc. In particular, it includes the information encoding features on mechanical or digital carriers.

Examples:
- the Manchester Ship Canal (Farnie, 1980)
- Michael Jackson’s nose following plastic surgery
- the laser-readable “pits” engraved June 2014 on Martin Doerr’s CD-R, copying songs of Edith Piaf
- the carved letters on the Rosetta Stone

In First Order Logic:
- E25(x) ⇒ E24(x)
- E25(x) ⇒ E26(x)
C. Scope note:
This class comprises pieces of land or sea floor. 
In contrast to the purely geometric notion of E53 Place, this class describes constellations of matter on the surface of the Earth or other celestial body, which can be represented by photographs, paintings, and maps.
Instances of the concept are composed of relatively immobile material items and features in a particular configuration at a particular location.

Examples:
- the Amazon river basin (Hegen, 1966)
- Knossos (Evans, 1921)
- the Apollo 11 landing the concept (Siegler and Smrekar, 2014)
- Heathrow Airport (Wicks, 2014)
- the submerged harbour of the Minoan settlement of Gournia, Crete (Watrous, 2012)
- the island of Crete

In First Order Logic:
- E27(x) ⇒ E26(x)
D. Scope note:
This class comprises identifiable features that are physically attached in an integral way to particular physical objects. 
Instances of the concept share many of the attributes of instances of E19 Physical Object. They may have a one-dimensional, two-dimensional, or three-dimensional geometric extent, but there are no natural borders that separate them completely in an objective way from the carrier objects. For example, a doorway is a feature but the door itself, being attached by hinges, is not. 
Instances of the concept can be features in a narrower sense, such as scratches, holes, reliefs, surface colours, reflection zones in an opal crystal or a density change in a piece of wood. In the wider sense, they are portions of particular objects with partially imaginary borders, such as the core of the Earth, an area of property on the surface of the Earth, a landscape or the head of a contiguous marble statue. They can be measured and dated, and it is sometimes possible to state who or what is or was responsible for them. They cannot be separated from the carrier object, but a segment of the carrier object may be identified (or sometimes removed) carrying the complete feature. 
This definition coincides with the definition of “fiat objects”, with the exception of aggregates of “bona fide objects” (Smith & Varzi, 2000).

Examples:
- the cave of Dirou, Mani, Greece (Psimenos. 2005)
- the temple in Abu Simbel before its removal, which was carved out of solid rock (E25) (Hawass, 2000)
- Albrecht Duerer's signature on his painting of Charles the Great (E25) (Strauss, 1974)
- the damage to the nose of the Great Sphinx in Giza (Temple, 2009)
- Michael Jackson’s nose prior to plastic surgery

In First Order Logic:
- E26(x) ⇒ E18(x)

Answer: Scope note:
This class comprises identifiable features that are physically attached in an integral way to particular physical objects. 
Instances of the concept share many of the attributes of instances of E19 Physical Object. They may have a one-dimensional, two-dimensional, or three-dimensional geometric extent, but there are no natural borders that separate them completely in an objective way from the carrier objects. For example, a doorway is a feature but the door itself, being attached by hinges, is not. 
Instances of the concept can be features in a narrower sense, such as scratches, holes, reliefs, surface colours, reflection zones in an opal crystal or a density change in a piece of wood. In the wider sense, they are portions of particular objects with partially imaginary borders, such as the core of the Earth, an area of property on the surface of the Earth, a landscape or the head of a contiguous marble statue. They can be measured and dated, and it is sometimes possible to state who or what is or was responsible for them. They cannot be separated from the carrier object, but a segment of the carrier object may be identified (or sometimes removed) carrying the complete feature. 
This definition coincides with the definition of “fiat objects”, with the exception of aggregates of “bona fide objects” (Smith & Varzi, 2000).

Examples:
- the cave of Dirou, Mani, Greece (Psimenos. 2005)
- the temple in Abu Simbel before its removal, which was carved out of solid rock (E25) (Hawass, 2000)
- Albrecht Duerer's signature on his painting of Charles the Great (E25) (Strauss, 1974)
- the damage to the nose of the Great Sphinx in Giza (Temple, 2009)
- Michael Jackson’s nose prior to plastic surgery

In First Order Logic:
- E26(x) ⇒ E18(x)