What was Colonel Gaddafi's date of death?
معمر محمد أبو منيار القذافي‎ Arabic pronunciation: [muʕamar al.qaðaːfiː]; /ˈmoʊ.əmɑːr ɡəˈdɑːfi/;  audio (help·info); c. 1942 – 20 October 2011), commonly known as Colonel Gaddafi,[b] was a Libyan revolutionary, politician, and political theorist.