Permanent is related to Wave. Wave is related to Base. Base is related to Guitar. 
Big is related to Prison. Prison is related to Building. Building is related to Tower. Tower is related to Defensive. 
Permanent <--RelatedTo--> Wave <--RelatedTo--> Base <--RelatedTo--> Guitar 
Big <--RelatedTo--> Prison <--RelatedTo--> Building <--RelatedTo--> Tower <--RelatedTo--> Defensive 