Workout is similar to Exercise. Exercise can cause/lead to Sweat. 
Light is related to Sign. Sign is related to Short. Short is related to Article. Article is related to Essay. 
Workout <--SimilarTo--> Exercise --Causes--> Sweat 
Light <--RelatedTo--> Sign <--RelatedTo--> Short <--RelatedTo--> Article <--RelatedTo--> Essay 