Lens is related to Eye. Eye is related to Fluid. 
Announce is a type of Tell. Tell is related to Lie. Lie is related to Fraud. Fraud is the opposite of Truth. 
Lens <--RelatedTo--> Eye <--RelatedTo--> Fluid 
Announce --IsA--> Tell <--RelatedTo--> Lie <--RelatedTo--> Fraud <--Antonym--> Truth 