Point is related to Like. Like is related to City. City is related to Center. Center is a type of Area. 
Pollution is the opposite of Conservation. Conservation is the opposite of Spending. Spending is related to Expense. Expense is related to Sheet. 
Point <--RelatedTo--> Like <--RelatedTo--> City <--RelatedTo--> Center --IsA--> Area 
Pollution <--Antonym--> Conservation <--Antonym--> Spending <--RelatedTo--> Expense <--RelatedTo--> Sheet 