Sir is related to Ceremony. Ceremony is related to Birthday. Birthday is related to Marker. Marker is related to Century. 
Encourage is a synonym of Nerve. you are likely to find Nerve in/at/on Human. Human is related to Coat. 
Sir <--RelatedTo--> Ceremony <--RelatedTo--> Birthday <--RelatedTo--> Marker <--RelatedTo--> Century 
Encourage <--Synonym--> Nerve --AtLocation--> Human <--RelatedTo--> Coat 