theorem BFO.MaterialEntityOrSite.site.inj
theorem BFO.MaterialEntityOrSite.site.inj: ∀ {a a_1 : j12bzjgj.BFO.Site}, j12bzjgj.BFO.MaterialEntityOrSite.site a = j12bzjgj.BFO.MaterialEntityOrSite.site a_1 → a = a_1
theorem BFO.MaterialEntityOrSite.site.inj
theorem BFO.MaterialEntityOrSite.site.inj: ∀ {a a_1 : j12bzjgj.BFO.Site}, j12bzjgj.BFO.MaterialEntityOrSite.site a = j12bzjgj.BFO.MaterialEntityOrSite.site a_1 → a = a_1