Old is related to Post. Post is related to Latin. Latin can be Language. 
Lean is related to Fit. Fit is a synonym of Suit. Suit is related to Card. Card is related to Single. 
Old <--RelatedTo--> Post <--RelatedTo--> Latin --HasProperty--> Language 
Lean <--RelatedTo--> Fit <--Synonym--> Suit <--RelatedTo--> Card <--RelatedTo--> Single 