Bird is a synonym of Time. Time is derived from Donor. Donor is related to Charity. Charity is related to Organization. 
Relax requires Comfortable. Comfortable is derived from Comfort. 
Bird <--Synonym--> Time --DerivedFrom--> Donor <--RelatedTo--> Charity <--RelatedTo--> Organization 
Relax --HasPrerequisite--> Comfortable --DerivedFrom--> Comfort 