Feeling is related to Believe. Believe is a synonym of Buy. Buy is related to Value. Value is related to Saving. 
Biology is related to Study. the last thing you do when you Study is Graduate. 
Feeling <--RelatedTo--> Believe <--Synonym--> Buy <--RelatedTo--> Value <--RelatedTo--> Saving 
Biology <--RelatedTo--> Study --HasLastSubevent--> Graduate 