Mortgage is related to Payment. Payment is related to Work. Work is related to Test. 
Appoint is related to Title. Title is related to Commander. Commander is related to Naval. 
Mortgage <--RelatedTo--> Payment <--RelatedTo--> Work <--RelatedTo--> Test 
Appoint <--RelatedTo--> Title <--RelatedTo--> Commander <--RelatedTo--> Naval 