Circle is related to Dot. Dot is a synonym of Period. Period is a synonym of Interval. Interval is a synonym of Season. 
Maintenance is a type of Support. Support is related to Helpful. Helpful is related to Guide. Guide is a synonym of Legend. 
Circle <--RelatedTo--> Dot <--Synonym--> Period <--Synonym--> Interval <--Synonym--> Season 
Maintenance --IsA--> Support <--RelatedTo--> Helpful <--RelatedTo--> Guide <--Synonym--> Legend 