Weekend is derived from Week. Weekend is a type of Date. Date is related to Play. Play is a synonym of Instrument. 
you are likely to find Toilet in/at/on Bathroom. Toilet is related to Plunge. Plunge is related to Fix. Fix is related to Shot. 
Week <--DerivedFrom-- Weekend --IsA--> Date <--RelatedTo--> Play <--Synonym--> Instrument 
Bathroom <--AtLocation-- Toilet <--RelatedTo--> Plunge <--RelatedTo--> Fix <--RelatedTo--> Shot 