Understanding is related to Insight. Insight is related to Deep. 
Alone is related to Sad. Sad is a different concept from Happy. People can be Happy. People can be Talented. 
Understanding <--RelatedTo--> Insight <--RelatedTo--> Deep 
Alone <--RelatedTo--> Sad <--DistinctFrom--> Happy <--HasProperty-- People --HasProperty--> Talented 