Salary is related to Raise. Raise is a type of Better. Better is etymologically related to Bet. Bet is related to Dare. 
Mental is related to Health. Health is related to Benefit. 
Salary <--RelatedTo--> Raise --IsA--> Better --EtymologicallyRelatedTo--> Bet <--RelatedTo--> Dare 
Mental <--RelatedTo--> Health <--RelatedTo--> Benefit 