Signal is a type of Electricity. you are likely to find Electricity in/at/on Room. Room is related to Inner. 
Anxiety is related to Fear. Fear is related to Worried. Worried is a form of Worry. 
Signal --IsA--> Electricity --AtLocation--> Room <--RelatedTo--> Inner 
Anxiety <--RelatedTo--> Fear <--RelatedTo--> Worried --FormOf--> Worry 