Period is related to Dot. Dot is a type of Mark. Mark is a type of Evaluation. 
Expectation is a synonym of Average. Average is related to Ridge. Bank is a type of Ridge. 
Period <--RelatedTo--> Dot --IsA--> Mark --IsA--> Evaluation 
Expectation <--Synonym--> Average <--RelatedTo--> Ridge <--IsA-- Bank 