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

Which of the following definitions best describes 'E19 Physical Object'?

A. Scope note:
This class comprises all persistent physical objects of any size that are purposely created by human activity and have physical boundaries that separate them completely in an objective way from other objects. 
The class also includes all aggregates of objects made for functional purposes of whatever kind, independent of physical coherence, such as a set of chessmen.

Examples:
- the Rosetta Stone (E22)
- LNER Class A4 4468 Mallard [the World’s fastest steam locomotive, preserved at the National Railway Museum of York, UK] (Solomon, 2003)
- the Portland Vase (Walker, 2004)

In First Order Logic:
- E22(x) ⇒ E19(x)
- E22(x) ⇒ E24(x)
B. Scope note:
This class comprises individual items of a material nature, which live, have lived, or are natural products of or from living organisms. 
Artificial objects that incorporate biological elements, such as Victorian butterfly frames, can be documented as both instances of the concept and E22 Human-Made Object.

Examples:
- me (fictitious)
- Tut-Ankh-Amun (Edwards and Boltin, 1979)
- Boukephalus [Horse of Alexander the Great] (Lamb, 2005)
- petrified dinosaur excrement PA1906-344

In First Order Logic:
- E20(x) ⇒ E19(x)
C. Scope note:
This class comprises items of a material nature that are units for documentation and have physical boundaries that separate them completely in an objective way from other objects. 
The class also includes all aggregates of objects made for functional purposes of whatever kind, independent of physical coherence, such as a set of chessmen. Typically, instances of the concept can be moved (if not too heavy).
In some contexts, such objects, except for aggregates, are also called “bona fide objects”, i.e. naturally defined objects (Smith & Varzi, 2000). 
The decision as to what is documented as a complete item, rather than by its parts or components, may be purely administrative or may be a result of the order in which the item was acquired.

Examples:
- Aphrodite of Milos (E22) (Kousser, 2005)
- the Cullinan Diamond (Scarratt and Shor, 2006)
- Apollo 13 at the time of launch (E22) (Lovell and Kluger, 1994)

In First Order Logic:
- E19(x) ⇒ E18(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 items of a material nature that are units for documentation and have physical boundaries that separate them completely in an objective way from other objects. 
The class also includes all aggregates of objects made for functional purposes of whatever kind, independent of physical coherence, such as a set of chessmen. Typically, instances of the concept can be moved (if not too heavy).
In some contexts, such objects, except for aggregates, are also called “bona fide objects”, i.e. naturally defined objects (Smith & Varzi, 2000). 
The decision as to what is documented as a complete item, rather than by its parts or components, may be purely administrative or may be a result of the order in which the item was acquired.

Examples:
- Aphrodite of Milos (E22) (Kousser, 2005)
- the Cullinan Diamond (Scarratt and Shor, 2006)
- Apollo 13 at the time of launch (E22) (Lovell and Kluger, 1994)

In First Order Logic:
- E19(x) ⇒ E18(x)