Emotional is related to Sentiment. Sentiment is related to Mood. Mood is related to Current. Current is related to Unit. 
Literature is related to Story. Story can be Interesting. Interesting is related to Exciting. 
Emotional <--RelatedTo--> Sentiment <--RelatedTo--> Mood <--RelatedTo--> Current <--RelatedTo--> Unit 
Literature <--RelatedTo--> Story --HasProperty--> Interesting <--RelatedTo--> Exciting 