Old is related to Hay. Hay is related to Farm. Farm is related to Cottage. 
Apology is related to Say. Say is related to Voice. Voice is related to Speak. 
Old <--RelatedTo--> Hay <--RelatedTo--> Farm <--RelatedTo--> Cottage 
Apology <--RelatedTo--> Say <--RelatedTo--> Voice <--RelatedTo--> Speak 