Therapy is related to Psychologist. Psychologist is related to Shrink. Reduce is a type of Shrink. 
Cancer is a type of Illness. Illness is related to Blind. Blind is related to Sight. Sight is related to Ear. 
Therapy <--RelatedTo--> Psychologist <--RelatedTo--> Shrink <--IsA-- Reduce 
Cancer --IsA--> Illness <--RelatedTo--> Blind <--RelatedTo--> Sight <--RelatedTo--> Ear 