you are likely to find Pit in/at/on Mine. Pit is related to Degree. Degree is related to College. College is related to Poster. 
Sir is a synonym of Mate. Mate is a synonym of Teammate. 
Mine <--AtLocation-- Pit <--RelatedTo--> Degree <--RelatedTo--> College <--RelatedTo--> Poster 
Sir <--Synonym--> Mate <--Synonym--> Teammate 