Half is related to Percentage. Percentage is a synonym of Share. Share is related to Division. Division is related to Century. 
Beg is related to Ask. Ask is a synonym of Expect. 
Half <--RelatedTo--> Percentage <--Synonym--> Share <--RelatedTo--> Division <--RelatedTo--> Century 
Beg <--RelatedTo--> Ask <--Synonym--> Expect 