user: Question: How many total murders happened after 2011?
Columns: ['Year', 'Crime Index Total', 'Violent crime', 'Non-violent Crime', 'Crime rate Per 1000', 'Violent crime Rate per 1000', 'Non-violent crime Rate per 1000', 'Murder', 'Rape', 'Robbery', 'Aggravated Assault']
Types: ['real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1994.0, 1740.0, 386.0, 1354.0, 103.6, 23.0, 80.6, 2.0, 20.0, 175.0, 189.0]
SQL:

assistant: SELECT SUM("Murder") FROM "Table" WHERE "Year" > 2011.0;