A <a href="https://en.wikipedia.org/wiki/British_Empire" id="mwOA" rel="mw:WikiLink" title="British Empire">British</a> <a href="https://en.wikipedia.org/wiki/Garrison" id="mwOQ" rel="mw:WikiLink" title="Garrison">garrison</a> is imprisoned in the <a href="https://en.wikipedia.org/wiki/Black_Hole_of_Calcutta" id="mwOg" rel="mw:WikiLink" title="Black Hole of Calcutta">Black Hole of Calcutta</a>.