Snow is related to Season. Season is a synonym of Age. Age is related to Date. Date is related to Dinner. 
Availability is related to Supply. Water is a type of Supply. Water is related to Sail. Sail is a synonym of Sweep. 
Snow <--RelatedTo--> Season <--Synonym--> Age <--RelatedTo--> Date <--RelatedTo--> Dinner 
Availability <--RelatedTo--> Supply <--IsA-- Water <--RelatedTo--> Sail <--Synonym--> Sweep 