Closest is related to Family. Grandmother is part of Family. Grandmother is related to Elderly. 
Episode is related to Show. Show is the opposite of Tell. Tell is related to Know. Know is related to Learning. 
Closest <--RelatedTo--> Family <--PartOf-- Grandmother <--RelatedTo--> Elderly 
Episode <--RelatedTo--> Show <--Antonym--> Tell <--RelatedTo--> Know <--RelatedTo--> Learning 