Capability is derived from Capable. Capability is related to Able. Able is related to Ability. Accountability is derived from Ability. 
Elevator is a type of Room. Room is the opposite of Hall. you are likely to find Reception in/at/on Hall. Reception can be used for Celebrate. 
Capable <--DerivedFrom-- Capability <--RelatedTo--> Able <--RelatedTo--> Ability <--DerivedFrom-- Accountability 
Elevator --IsA--> Room <--Antonym--> Hall <--AtLocation-- Reception --UsedFor--> Celebrate 