Domain:

crmsci:S4 Observation

Range:

crmsci:S9 Property Type

Quantification:

0,n:1,1

Subproperty of:

• crm:E13 Attribute Assignment → crm:P177 assigned property of type (is type of property assigned) → crm:E55 Type

Scope note:

This property associates an instance of S4 Observation with the instance of S9 Property Type for which the observation provides a value or evidence, such as “concentration of nitrate” observed in the water from a particular borehole. Encoding the observed property by type, observed entity and value (properties O9, O10, O16) is a method to circumscribe the reification of the observed property by the respective instance of S4 Observation.

In an RDFS encoding, this circumscription can be transformed into an explicit representation of the observed property in terms of a formal ontology either by use of a reification construct or by the use of a Named Graph containing the observed property. The latter representation allows for more formal reasoning with the model, the former is more flexible about the kinds of observations.

Examples:

• The seismic hazard analysis and recording by EPPO in 1990 (S4), in the area of Attiki observed property type share wave velocity (S9) and recorded it (Lucchese et al., 2013;
  Kritikos et al., 2013; InGeoCloudS, 2012; InGeoCloudS, 2013).
• The Gas Chromatography analysis (S4) of the sample ‘mid-blue paint from the sky’ observed property type retention time (S9). (Foister, 2015).

In First Order Logic:

• O9(x,y) ⇒ S4(x)
• O9(x,y) ⇒ S9(y)
• O9(x,y) ⇒ P177(x,y)