Rock is related to Large. Large is related to Cow. Cow is a synonym of Devil. Devil is a type of Cook. 
Source is a synonym of Root. Root is related to Float. Float is related to Lay. 
Rock <--RelatedTo--> Large <--RelatedTo--> Cow <--Synonym--> Devil --IsA--> Cook 
Source <--Synonym--> Root <--RelatedTo--> Float <--RelatedTo--> Lay 