After the construction of the OntoMP, the next stage was to describe it in a standard ontology used for museums, CIDOC-CRM. The ontology was built up having in mind the need to keep it fully compatible with the original, avoiding to add or modify any class.

Based on the first drawn of OntoMP as stated in the process of reverse engineering, we converted OntoMP to a CIDOC-CRM compatible form ontology with the objective of adopt a standard format used in the museums area. In this way we preserve the interoperability of our repository for further exploration and knowledge extraction. The next image shows the CIDOC-CRM version of OntoMP structure. OntoMP: CIDOC-CRM Representation defined is presented in Figure 1.

Figure 1: OntoMP: CIDOC-CRM Representation for Museum of the Person

In Figure 2, a OntoMP: CIDOC-CRM Representation instantiated with Maria Cacheira life story is shown.

Figure 2: An instance of OntoMP: CIDOC-CRM Representation for Maria Cacheira life story

The image above portrays the instantiation of CIDOC-CRM with a concrete life story.
Looking at the concrete layer of that CIDOC-CRM ontology, it can be read, in Figure 2, that:

A life story (E31 Document) is about (P129) a person (E21 Person) and contains photos (E38 Image) concerning this person. The photo is identified by (P1) 090-F-01.jpg (E41 Apellation), has note (P3) Maria Alice Rodrigues Cacheira, refers to (P67) Maria Alice Rodrigues Cacheira (E55 Type Description), and was taken in a (E52 Time Span) — that is identified by (P78) 2001-12-07, an (E50 Date) — and at a (E53 Place) — that is identified by (P87) Junta de Freguesia da Afurada, an (E44 Place Appellation).

Maria Cacheira (E21 Person), participated in (P11) the (E5 Event) of her (E67 Birth). This event occurred at (E52 Time Span)—that is identified by (P78) 1946-10-08, an (E50 Date) — and at a (E53 Place) — that is identified by (P87) Afurada, an (E44 Place Appellation).

In this instance of Maria Cacheira’s life story there are other concepts that were identified. All these concepts, in CIDOC-CRM version, are described as (E55) Type because they characterize a (E21) Person and his instances. To exemplify that approach, consider the following case:

Maria Cacheira (E21 Person) has type (P2) Peixeira e Empregada de limpeza (E55 Type Job), has type (P2) Viúva (E55 Type Marital Status), has type (P2) Sabe ler e escrever (4ª classe) (E55 Type Qualifications), has type (P2) Católica (E55 Type Religion).

To sum up, notice that Figure 13 shows a description of a specific life story (partial view) mapping the life story concepts and relations into standard CIDOC-CRM elements. In this way (following this standard representation) it will be possible to query systematically the knowledge repository to explore it.