Swear is a synonym of Trust. Trust is related to Depend. Depend is related to Reply. Reply is related to Respond. 
Trigger is a type of Device. Device is related to Letter. Letter is a type of Owner. 
Swear <--Synonym--> Trust <--RelatedTo--> Depend <--RelatedTo--> Reply <--RelatedTo--> Respond 
Trigger --IsA--> Device <--RelatedTo--> Letter --IsA--> Owner 