Respond is the opposite of Call. Call is a type of Indicate. Indicate is a synonym of Show. Diamond can be used for Show. 
Productivity is derived from Produce. Produce is related to Fire. 
Respond <--Antonym--> Call --IsA--> Indicate <--Synonym--> Show <--UsedFor-- Diamond 
Productivity --DerivedFrom--> Produce <--RelatedTo--> Fire 