sparql_runtime:sparql

sparql_find(?From, ?To, ?F, ?T, :Q) is nondet

Implement *(PropertyPath). We should probably collect translated queries in a dynamic predicate to avoid the copy_term. Also, Q will quite often be simple. In that case we can map to rdf_reachable/3, although one of the problems is that rdf_reachable/3 uses rdf_has/3, and does not deal with graphs.

We should be a bit smarter here and choose between forward, backward, two-sided breath-first, etc. based on which start point is given.

To be done: - Maybe a thing for using tor? Planning most likely more important than the iteration speed.