Item is related to Unit. Unit is related to Act. 
Equal is related to Artificial. Artificial is similar to Near. Near is similar to Left. Left is a synonym of Remaining. 
Item <--RelatedTo--> Unit <--RelatedTo--> Act 
Equal <--RelatedTo--> Artificial <--SimilarTo--> Near <--SimilarTo--> Left <--Synonym--> Remaining 