Subclass of:

• crm:E28 Conceptual Object

Superclass of:

• crm:E30 Right
• crm:E73 Information Object
• frbroo:F1 Work
• sdh-int:C13 Propositional Datation
• sdh-int:C6 Component of a Recipe
• sdh-so:C16 Participant Description
• sdh-int:C9 Asserted Actor's Role
• sdh:C2 Propositional Situation
• crmdig:D29 Annotation Object
• sdh-int:C16 Quantifiable Component
• sdh-so:C41 Role in Participation Relation
• sdh:C66 Involvement of a Thing
• sdh-so:C43 Actor's Role in a Social Relationship
• sdh-int:C20 Asserted Thing's Involvement

Scope note:

This class comprises immaterial items, including but not limited to stories, plots, procedural prescriptions, algorithms, laws of physics or images that are, or represent in some sense, sets of propositions about real or imaginary things and that are documented as single units or serve as topics of discourse.

This class also comprises items that are “about” something in the sense of a subject. In the wider sense, this class includes expressions of psychological value such as non-figural art and musical themes. However, conceptual items such as types and classes are not instances of E89 Propositional Object. This should not be confused with the definition of a type, which is indeed an instance of E89 Propositional Object.

Examples:

• Maxwell’s Equations
• The ideational contents of Aristotle’s book entitled ‘Metaphysics’ as rendered in the Greek texts translated in … Oxford edition…
• The underlying prototype of any “no-smoking” sign (E36)
• The common ideas of the plots of the movie ""The Seven Samurai"" by Akira Kurosawa and the movie “The Magnificent Seven” by John Sturges
• The image content of the photo of the Allied Leaders at Yalta 1945 (E38)

Context notes:

Additional examples in relation with the sdh:C27 Intention class:

In First Order Logic:

• E89(x) ⇒ E28(x)

Outgoing properties:

• crm:P67 refers to (is referred to by) (0,n:0,n) → crm:E1 CRM Entity
• crm:P129 is about (is subject of) (0,n:0,n) → crm:E1 CRM Entity
• crm:P148 has component (is component of) (0,n:0,n) → crm:E89 Propositional Object
• crm-sup:P32 has propositional object type (is type of) (0,n:0,1) → crm-sup:C35 Propositional Object Type
• sdh-int:P16 is asserted by (asserts) (0,n:1,1) → frbroo:F2 Expression

Incoming properties:

• crm:E89 Propositional Object → crm:P148 has component (is component of) (0,n:0,n)
• frbroo:F31 Performance → frbroo:R66 included performed version of (had a performed version through) (0,n:0,n)
• sdh:C23 Use → sdh:P31 has purpose (is purpose of) (0,n:0,1)
• sdh:C4 Intention → sdh:P34 has content (is content of) (0,n:0,1)