Blow is related to Nose. Nose is related to Think. Brain can be used for Think. Brain is related to Shock. 
Material is related to Chair. Chair is related to Boy. Boy is the opposite of Sister. 
Blow <--RelatedTo--> Nose <--RelatedTo--> Think <--UsedFor-- Brain <--RelatedTo--> Shock 
Material <--RelatedTo--> Chair <--RelatedTo--> Boy <--Antonym--> Sister 