URIs declination

Is there a way for embedded "declinations" in URIs forming a statement in
the manner of an Subject Verb Object language statement (tense, person,
etc.). Given a determinate ontology, is there a way to make "parseable"
that determinate Predicate occurred in the past? (I mean, without resorting
in more statements, something maybe encoded in them like hashes that an
engine could parse). Could this allow for example to encode negation in
statements?

Best,
Sebastian.