Line is related to Continuous. Continuous is derived from Continue. Carry is a type of Continue. 
Promising is a form of Promise. Promise is related to Engagement. Engagement is related to Marry. 
Line <--RelatedTo--> Continuous --DerivedFrom--> Continue <--IsA-- Carry 
Promising --FormOf--> Promise <--RelatedTo--> Engagement <--RelatedTo--> Marry 