Complaint is a synonym of Charge. Charge is a different concept from Free. Free is related to Agreement. Agreement is the opposite of Protest. 
the first thing you do when you Learn is Observe. Observe is a synonym of Notice. Notice is related to News. News can be Broadcast. 
Complaint <--Synonym--> Charge <--DistinctFrom--> Free <--RelatedTo--> Agreement <--Antonym--> Protest 
Learn --HasFirstSubevent--> Observe <--Synonym--> Notice <--RelatedTo--> News --ReceivesAction--> Broadcast 