Sweater is related to Coat. Coat is related to Outdoor. Outdoor is related to Play. 
Agenda is a synonym of Calendar. Calendar is related to Event. Event is related to Program. 
Sweater <--RelatedTo--> Coat <--RelatedTo--> Outdoor <--RelatedTo--> Play 
Agenda <--Synonym--> Calendar <--RelatedTo--> Event <--RelatedTo--> Program 