Grandmother is a different concept from Grandfather. Grandfather is a type of Ancestor. Ancestor is a synonym of Root. Root is a synonym of Origin. 
Draw is related to Artist. Artist is related to Museum. you are likely to find Rare in/at/on Museum. 
Grandmother <--DistinctFrom--> Grandfather --IsA--> Ancestor <--Synonym--> Root <--Synonym--> Origin 
Draw <--RelatedTo--> Artist <--RelatedTo--> Museum <--AtLocation-- Rare 