To test it browse to either
- https://eyereasoner.github.io/eyebrow/socrates.html
- https://eyereasoner.github.io/eyebrow/gps.html
- https://eyereasoner.github.io/eyebrow/cha58.html
- https://eyereasoner.github.io/eyebrow/slide33.html
and run the ?- query.