Hole is related to Whale. Whale is a type of Hunt. Hunt is related to Protect. 
Phone is related to Line. Line is a synonym of Tune. Tune is related to Sing. 
Hole <--RelatedTo--> Whale --IsA--> Hunt <--RelatedTo--> Protect 
Phone <--RelatedTo--> Line <--Synonym--> Tune <--RelatedTo--> Sing 