An ontology is a formal description of knowledge as a set of concepts within a domain and the relationships that hold between them. During the past few years, ontologies became ever more popular. They can be used to describe a lot of scenarios, they are also very useful in the description of real-life situations. Our work stems from a collaboration between two departments of our University, DISIM and MESVA, within a project called eHealth, that, in the first part, focuses on the creation and the querying of an ontology based on anonymous data retrieved from first aid phone services. Once obtained the first aid data and manually created the ontology classes and properties, we are able to automatically insert the data that describes the emergency call received from the first aid operator through a Java application written by us. We analyzed those data through queries, obtaining useful results that can potentially save lives, for example, aiding the operator in the choice of the rescue vehicle to send out for an emergency, depending on the situation.
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