Valuable is related to Important. Important is the opposite of Slight. Slight is the opposite of Value. 
Area is related to Lawn. Lawn is related to Park. Park is related to Camp. Camp is related to Destination. 
Valuable <--RelatedTo--> Important <--Antonym--> Slight <--Antonym--> Value 
Area <--RelatedTo--> Lawn <--RelatedTo--> Park <--RelatedTo--> Camp <--RelatedTo--> Destination 