Electrical is related to Energy. Energy is related to Carbohydrate. Carbohydrate is related to Rice. 
Pension is a synonym of Rent. Rent is related to Sell. 
Electrical <--RelatedTo--> Energy <--RelatedTo--> Carbohydrate <--RelatedTo--> Rice 
Pension <--Synonym--> Rent <--RelatedTo--> Sell 