Teacher is a type of Educator. Teacher can Explain. 
Freeze is a type of Limitation. Freeze is related to Very. Very is related to Sea. Sea is related to Shark. 
Educator <--IsA-- Teacher --CapableOf--> Explain 
Limitation <--IsA-- Freeze <--RelatedTo--> Very <--RelatedTo--> Sea <--RelatedTo--> Shark 