Ego is related to Awareness. Feel is a type of Awareness. Feel is related to Silk. Silk is related to Smooth. 
Specialist is derived from Specialize. Specialist is related to Scientist. Scientist can Research. 
Ego <--RelatedTo--> Awareness <--IsA-- Feel <--RelatedTo--> Silk <--RelatedTo--> Smooth 
Specialize <--DerivedFrom-- Specialist <--RelatedTo--> Scientist --CapableOf--> Research 