Monster is related to Tree. Tree is related to Growing. 
Serious is similar to Solid. Matter can be Solid. Matter is a type of Concern. Concern is related to Feeling. 
Monster <--RelatedTo--> Tree <--RelatedTo--> Growing 
Serious <--SimilarTo--> Solid <--HasProperty-- Matter --IsA--> Concern <--RelatedTo--> Feeling 