Pioneer is related to Settlement. Settlement is related to Group. Group is related to Union. Union is related to War. 
Sight is related to Eye. you are likely to find Eye in/at/on Face. Face is a synonym of Expression. 
Pioneer <--RelatedTo--> Settlement <--RelatedTo--> Group <--RelatedTo--> Union <--RelatedTo--> War 
Sight <--RelatedTo--> Eye --AtLocation--> Face <--Synonym--> Expression 