Productive is a synonym of Fat. Fat is the opposite of Thin. Thin is a type of Reduce. Reduce is a synonym of Trim. 
Snap is related to Finger. Finger is related to Limb. 
Productive <--Synonym--> Fat <--Antonym--> Thin --IsA--> Reduce <--Synonym--> Trim 
Snap <--RelatedTo--> Finger <--RelatedTo--> Limb 