Room is related to Term. Term is related to Fellow. Fellow is related to Person. Activist is a type of Person. 
Meter is related to Yard. you are likely to find Yard in/at/on City. City is related to Sound. 
Room <--RelatedTo--> Term <--RelatedTo--> Fellow <--RelatedTo--> Person <--IsA-- Activist 
Meter <--RelatedTo--> Yard --AtLocation--> City <--RelatedTo--> Sound 