Sir is related to Chair. Chair is related to Useful. Useful is a synonym of Favorable. Favorable is a synonym of Helpful. 
Form is related to Cry. Cry is related to Emotion. Relief is a type of Emotion. Relief is related to Disaster. 
Sir <--RelatedTo--> Chair <--RelatedTo--> Useful <--Synonym--> Favorable <--Synonym--> Helpful 
Form <--RelatedTo--> Cry <--RelatedTo--> Emotion <--IsA-- Relief <--RelatedTo--> Disaster 