Context: CAMRA maintains a "National Inventory" of historical notability and of architecturally and decoratively notable pubs. The National Trust owns thirty-six public houses of historic interest including the George Inn, Southwark, London and The Crown Liquor Saloon, Belfast, Northern Ireland.

Question: How many pubs does the National Trust own?
Answer: thirty-six

Question: In what city is the George Inn located?
Answer: London

Question: What city is home to The Crown Liquor Saloon?
Answer: Belfast

Question: What part of the United Kingdom is Belfast located in?
Answer: Northern Ireland

Question: What body maintains a National Inventory of notable pubs?
Answer: CAMRA