Affair is related to People. People is related to Royal. 
Tighten is a synonym of Reduce. Reduce is a synonym of Concentrate. Think requires Concentrate. Thinking is a form of Think. 
Affair <--RelatedTo--> People <--RelatedTo--> Royal 
Tighten <--Synonym--> Reduce <--Synonym--> Concentrate <--HasPrerequisite-- Think <--FormOf-- Thinking 