A SelfConnectedObject is any Object that does not consist of two or more disconnected parts.
||Bubble||A globe which has a Liquid surface and which contains a Gas.|
| ||ContentBearingObject||Any SelfConnectedObject that expresses content. This content may be a Proposition, e.g. when the ContentBearingObject is a Sentence or Text, or it may be a representation of an abstract or physical object, as with an Icon, a Word or a Phrase.|
| ||Nest||Any structure which is created by nonhuman Animals for the purpose of giving birth to their offspring.|
| ||Organelle||In cell biology, an organelle is a specialized subunit, usually within a cell, that has a specific function. The name organelle comes from the idea that these structures are parts of cells, as organs are to the body, hence organelle, the suffix -elle being a diminutive. Organelles are either separately enclosed within their own LipidBilayer (also called membrane-bound organelles) or are spatially distinct functional units without a surrounding lipid bilayer (non-membrane bound organelles). Although most organelles are functional units within cells, some functional units that extend outside of cells are often termed organelles, such as cilia, the flagellum and archaellum, and the trichocyst. [from Wikipedia]|
| ||OrganicObject||This class encompasses Organisms, CorpuscularObjects that are parts of Organisms, i.e. BodyParts, and CorpuscularObjects that are nonintentionally produced by Organisms, e.g. ReproductiveBodies.|
| ||RealEstate||Land, including all the natural resources and permanent buildings on it.|
| ||Sonar||Something that emits and receives sound for the purpose of locating and tracking distant objects. Note that this covers both manmade devices and BodyParts such as the sonar of bats and dolphins.|