Oppose is a synonym of React. React is a type of Act. Participate is a type of Act. Participate is etymologically related to Capable. 
Quantity is a different concept from Want. Want is a synonym of Require. Require is a synonym of Command. Command is a synonym of Appointment. 
Oppose <--Synonym--> React --IsA--> Act <--IsA-- Participate --EtymologicallyRelatedTo--> Capable 
Quantity <--DistinctFrom--> Want <--Synonym--> Require <--Synonym--> Command <--Synonym--> Appointment 