diff --git a/src/sdgio-edit.owl b/src/sdgio-edit.owl
index dacf81c..6e1911c 100644
--- a/src/sdgio-edit.owl
+++ b/src/sdgio-edit.owl
@@ -139,21 +139,21 @@ SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000019> <https://purl.unep.org/sdg
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000019> ObjectSomeValuesFrom(<http://purl.obolibrary.org/obo/BFO_0000051> <https://purl.unep.org/sdg/SDGIO_00000018>))
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000019> ObjectSomeValuesFrom(<http://purl.obolibrary.org/obo/RO_0000057> ObjectIntersectionOf(ObjectSomeValuesFrom(<http://purl.obolibrary.org/obo/BFO_0000051> <http://purl.obolibrary.org/obo/ENVO_00002186>) <http://purl.obolibrary.org/obo/ENVO_00000020>)))
 AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000116> <https://purl.unep.org/sdg/SDGIO_00000020> "Draft class. See Issue #22.")
-AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000020> "The disposition of an entity to encounter one or more hazards and, as a result, to realise one or more of its vulnerabilities.")
 AnnotationAssertion(rdfs:label <https://purl.unep.org/sdg/SDGIO_00000020> "risk"@en)
-AnnotationAssertion(rdfs:comment <https://purl.unep.org/sdg/SDGIO_00000020> "The probability of this disposition being realised can be assigned on the information or data level.")
+AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000020> "A disposition of a bearer to realise one or more of its vulnerabilities when participating in a process which exposes the bearer to one or more corresponding hazards.")
+AnnotationAssertion(rdfs:comment <https://purl.unep.org/sdg/SDGIO_00000020> "Risk is increased when harm or damage is realised and when an entity is likely to encounter a hazard in some process.  The probability of this disposition being realised can be assigned on the information or data level.")
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000020> <http://purl.obolibrary.org/obo/BFO_0000016>)
 AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000116> <https://purl.unep.org/sdg/SDGIO_00000021> "Many things can have some degree of a 'hazard disposition' (e.g. the floor, a glass, etc). Thus, usage of this class should probably be linked to an estimated probability or a fixed list of hazards.")
 AnnotationAssertion(rdfs:label <https://purl.unep.org/sdg/SDGIO_00000021> "hazard disposition"@en)
 AnnotationAssertion(rdfs:comment <https://purl.unep.org/sdg/SDGIO_00000021> "Draft.")
 AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000021> "A disposition of an entity to cause harm or damage to another entity.")
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000021> <http://purl.obolibrary.org/obo/BFO_0000016>)
-AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000022> "The risk that an entity encounters one or more flooding hazards and realises its vulnerability towards flooding.")
 AnnotationAssertion(rdfs:label <https://purl.unep.org/sdg/SDGIO_00000022> "risk of flooding"@en)
+AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000022> "The risk that a bearer realises its vulnerability towards flooding when participating in a process which exposes the bearer to a flooding hazard.")
 AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000116> <https://purl.unep.org/sdg/SDGIO_00000022> "Draft.")
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000022> <https://purl.unep.org/sdg/SDGIO_00000020>)
-AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000023> "The risk that an entity encounters one or more drowning hazards and realises its vulnerability towards drowning.")
 AnnotationAssertion(rdfs:label <https://purl.unep.org/sdg/SDGIO_00000023> "risk of drowning"@en)
+AnnotationAssertion(<http://purl.obolibrary.org/obo/IAO_0000115> <https://purl.unep.org/sdg/SDGIO_00000023> "The risk that a bearer realises its vulnerability towards drowning when participating in a process which exposes the bearer to a drowning hazard.")
 AnnotationAssertion(rdfs:comment <https://purl.unep.org/sdg/SDGIO_00000023> "Draft")
 SubClassOf(<https://purl.unep.org/sdg/SDGIO_00000023> <https://purl.unep.org/sdg/SDGIO_00000020>)
 AnnotationAssertion(rdfs:label <https://purl.unep.org/sdg/SDGIO_00000024> "vulnerability"@en)