Power is related to Soap. Soap is related to Opera. you are likely to find Theater in/at/on Opera. you are likely to find Actor in/at/on Theater. 
Cancer is a type of Animal. Wolf is a type of Animal. 
Power <--RelatedTo--> Soap <--RelatedTo--> Opera <--AtLocation-- Theater <--AtLocation-- Actor 
Cancer --IsA--> Animal <--IsA-- Wolf 