Loom - Knowledge base

Loom is a knowledge base created in 1987.

#2225on PLDB

37Years Old

Loom website
Loom first developed in Information Sciences Institute
Loom on HOPL
Read more about Loom on Semantic Scholar: 1.

Example from the web:

(defconcept air-base
             :is-primitive
                     (and military-installation
                     (exactly 1 name)
                     (at-least 1 runway-length)))

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