London 's annual Notting Hill Carnival , the largest in Europe and second in the world only to Rio , ended peacefully on Monday with an estimated 800,000 revellers singing and dancing the day away in high spirits .
<response> <location>London</location> 's annual <misc>Notting Hill Carnival</misc> , the largest in <location>Europe</location> and second in the world only to <location>Rio</location> , ended peacefully on Monday with an estimated 800,000 revellers singing and dancing the day away in high spirits . </response>