Document is a type of Communication. Computer can be used for Communication. Computer is related to Preference. Preference is related to Religion. 
Blood is related to Juice. Juice is related to Fruit. 
Document --IsA--> Communication <--UsedFor-- Computer <--RelatedTo--> Preference <--RelatedTo--> Religion 
Blood <--RelatedTo--> Juice <--RelatedTo--> Fruit 