# About the Predicate category

**URL:** <https://swi-prolog.discourse.group/t/about-the-predicate-category/1945>\
**Category:** Predicate\
**Created:** [March 2, 2020, 11:48pm UTC](https://swi-prolog.discourse.group/t/about-the-predicate-category/1945 "2020-03-02T23:48:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![EricGT](https://avatars.discourse-cdn.com/v4/letter/e/f1d935/32.png) [@EricGT](https://swi-prolog.discourse.group/u/EricGT)\
**Post date:** [March 2, 2020, 11:48pm UTC](https://swi-prolog.discourse.group/t/about-the-predicate-category/1945/1 "2020-03-02T23:48:13Z")

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When you are not sure which SWI-Prolog base or library predicate, combination of predicates, or options for a predicate(s) to use.