Electric is related to Current. Current is related to Paper. you are likely to find Paper in/at/on Garbage. 
Blood is related to Animal. Animal can be used for Pet. Pet is related to Familiar. 
Electric <--RelatedTo--> Current <--RelatedTo--> Paper --AtLocation--> Garbage 
Blood <--RelatedTo--> Animal --UsedFor--> Pet <--RelatedTo--> Familiar 