Medical documentation is usually represented as a free text. That makes it almost unusable for all other analytical purposes. It would be a great advantage to have at least some information structured in a machine readable form. In this contribution we introduce a system which performs information extraction from partially structured texts such as discharge summaries. It is a rule-based system using ontologies even for rule formulation. We take advantage of Linked Data principles, represent all

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... knowledge as ontologies and make output data available in RDF. We hope this is a right direction for medical information publication and enrichment with other data e.g., from Linked Open Data cloud.