Grief is a synonym of Pain. Pain is related to Sensation. 
Fall requires Slip. Slip is related to Balance. Balance is a type of Equality. Equality is related to Just. 
Grief <--Synonym--> Pain <--RelatedTo--> Sensation 
Fall --HasPrerequisite--> Slip <--RelatedTo--> Balance --IsA--> Equality <--RelatedTo--> Just 