Reconstruct a question, answer pair from this explanation: This place can be described as large building. Being large building, it can accomodate my people and is owned by a billionaire since the entrance hall was impressive and wide enough.

Q:The building could accommodate many people. The entrance hall alone was impressive, being wide enough to admit a hundred shoulder to shoulder. But the building was owned by a billionaire and used only for his personal entertainment. How would you describe this place?
Options:
- convention center
- public building
- large building
- school
- town hall
A:large building