Head is related to Mayor. Mayor is related to Town. Town is related to Council. Council is related to City. 
Short is related to Crop. Crop is the opposite of Expand. Expand is a synonym of Increase. Increase is the opposite of Decrease. 
Head <--RelatedTo--> Mayor <--RelatedTo--> Town <--RelatedTo--> Council <--RelatedTo--> City 
Short <--RelatedTo--> Crop <--Antonym--> Expand <--Synonym--> Increase <--Antonym--> Decrease 