theorem BFO.OccurrentOrTemporalRegion.occurrent.inj
theorem BFO.OccurrentOrTemporalRegion.occurrent.inj: ∀ {a a_1 : j12bzjgj.BFO.Occurrent}, j12bzjgj.BFO.OccurrentOrTemporalRegion.occurrent a = j12bzjgj.BFO.OccurrentOrTemporalRegion.occurrent a_1 → a = a_1