Matter is related to Important. Important is similar to Outstanding. Outstanding is a synonym of Remarkable. Remarkable is a synonym of Rare. 
Colleague is related to Peer. Peer is related to Influence. Exposure is a type of Influence. 
Matter <--RelatedTo--> Important <--SimilarTo--> Outstanding <--Synonym--> Remarkable <--Synonym--> Rare 
Colleague <--RelatedTo--> Peer <--RelatedTo--> Influence <--IsA-- Exposure 