Conspiracy is a type of Plot. Plot is a synonym of Lot. Lot is a synonym of Prize. 
Observe is the opposite of Ignore. Ignore is the opposite of Watch. Watch is related to Audience. Audience is related to Performance. 
Conspiracy --IsA--> Plot <--Synonym--> Lot <--Synonym--> Prize 
Observe <--Antonym--> Ignore <--Antonym--> Watch <--RelatedTo--> Audience <--RelatedTo--> Performance 