The ontologies created were developed using the methodology set out by Noy and Mcguinness. This method comprises the following steps:

• The first step is to determine the domain and scope of the ontology, which involves answering questions such as: What is the domain that the ontology will understand?, What is the use foreseen for the ontology?, what kind of questions the ontology should provide an answer? and who will use and maintain the ontology?.
• The second step involves considering the use of existing ontologies in order to prevent repeated work already done.
• The third step is to identify the important terms in the ontology, for which a list of all terms that can make statements about the problem domain shall be done.
• The fourth and fifth steps are related and are done in parallel. In the fourth step, classes and their hierarchy shall be defined using strategies topdown, bottom-up or a combination thereof; whereas in the fifth step, the attributes of the classes are defined, which can be intrinsic, extrinsic.
• In the sixth step the constraints of the attributes are defined in terms of domain and range, their cardinality and type (string, number, logical enumeration or instance).
• Finally, are created instances of the hierarchy by setting each individual composing the ontology.

To validate the ontology created, a service from W3C, called RDF Validation Service 1, can and shall be used. So the overall process followed to create OntoMP can be split into the three steps described below, as depicted in Figure 1:

1. Reverse engineering of Museum of the Person (from Museum of the Person to Museum of the Person ontology);
2. Mapping the museum standard format view (from Museum of the Person ontology toCIDOC-CRM.
3. Extending the CIDOC-CRM version (from CIDOC-CRM to FOAF and DBpedia).

Figure 1: Reverse Engineering and mapping of Museum of the Person

Based on the thesaurus, and on the DTDs illustrated in the reverse engineering process above, a first draft of an ontology for the Museum of the Person was created.

The first step was an exhaustive extraction of the concepts present in the life stories. After a long analysis phase we came up with the following list:

Concepts of DTD and Thesaurus to create the ontology

DTD + Thesaurus term	English explanation term
Pessoa	People
Ascendência	Ancestry
Descendência	Offspring
Episódio Casa	House Episode
Profissão	Job
Episódio Educação	Education Episode
Episódio Namoro	Dating Episode
Evento Acidente	Accident Event
Evento Migração	Migration Event
Evento Festividade	Festive Event
Evento Político	Political Event
Evento Catastrófico	Catastrophic Event
Casamento	Marriage
Nascimento	Birth
Sonho	Dream
Episódio Infância	Childhood Episode
Lazer	Leisure
Religião	Religion
Filosofia de vida	Life's Philosophy

Identified Relations

Relation term	English explanation term
exerce	Performs
éRetratada	Depicted
visita	Visits
vive	Lives
recebe	Receives
narra	Tells
tem	Has
participa	Enrolls
tipo	Has-type
ocorre	Occurs
dizRespeito	Refers to

After the first phase we realized that we could still add some more concepts to make a more complete ontology:

Identified Concepts

Concept term	English explanation term
Estado Civil	Marital Status
Conjuge	Spouse
Sexo	Sex
Habilitações Literárias	Literacy
Partido Político	Political Party
Primeira Comunhão	First Communion
Morte	Death
Batismo	Baptism
Fotos	Photos
Nascimento do Filho	Child’s Birth
Descrição	Description
Ficheiro	File