Hand is related to Man. Man is related to Doctor. 
Ice is related to Solid. Solid is a type of Substance. Substance is related to Clay. Clay is a synonym of Mud. 
Hand <--RelatedTo--> Man <--RelatedTo--> Doctor 
Ice <--RelatedTo--> Solid --IsA--> Substance <--RelatedTo--> Clay <--Synonym--> Mud 