Deductive Querying of Natural Logic Bases

Troels Andreasen, Henrik Bulskov, Per Anker Jensen, Jørgen Fischer Nilsson

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We introduce a dedicated form of natural logic intended for representation of sentences in a knowledge base. Natural logic is a version of formal logic whose sentences cover a stylized fragment of natural language. Thus, the sentences in the knowledge base can be read and understood directly by a domain expert, unlike, say, predicate logic and description logic. The paper describes the inference rules enabling deductive querying of the knowledge base. The natural logic sentences and the inference rules are represented in Datalog providing a convenient graph form. As such, the natural logic knowledge base may be viewed as an enriched formal ontology structure. We describe various query facilities including pathway finding accommodated by this setup.
Original languageEnglish
Title of host publicationFlexible Query Answering Systems : Proceedings of the 13th International Conference, FQAS 2019, Amantea, Italy, July 2–5, 2019
EditorsAlfredo Cuzzocrea, Sergio Greco, Henrik Legind Larsen, Domenico Saccà, Troels Andreasen, Henning Christiansen
Number of pages11
Place of PublicationCham
Publication date2019
ISBN (Print)9783030276287
ISBN (Electronic)9783030276294
Publication statusPublished - 2019
EventThe 13th International Conference in Flexible Query Answering Systems. FQAS 2019 - Hotel Village “La Principessa”, Amantea, Italy
Duration: 2 Jul 20195 Jul 2019
Conference number: 13


ConferenceThe 13th International Conference in Flexible Query Answering Systems. FQAS 2019
LocationHotel Village “La Principessa”
Internet address
SeriesLecture Notes in Computer Science


  • Natural logic
  • Knowledge bases
  • Deductive querying
  • Formal ontology

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