# \#racklog **URL:** https://racket.discourse.group/tag/racklog/236.md [Latest](https://racket.discourse.group/latest.md) · [Categories](https://racket.discourse.group/categories.md) · [Tags](https://racket.discourse.group/tags.md) --- ## [Prolog to Racklog - Trouble using %rel and %which](https://racket.discourse.group/t/prolog-to-racklog-trouble-using-rel-and-which/3544)
**Author:** [@lannydpittman](https://racket.discourse.group/u/lannydpittman)\ **Replies:** 1\ **Last updated:** [February 6, 2025, 4:30pm UTC](https://racket.discourse.group/t/prolog-to-racklog-trouble-using-rel-and-which/3544 "2025-02-06T16:30:01Z")
This problem has really stumped me. I don't understand the correct method to build a simple Prolog rule in Racklog, for example, pairing two people up by company: % Prolog (runs in SWISH) company(art ,apple). company(bo…