<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngesikhathi sokuhambela iDiscovery ngo-19011904 uCheetham wenza ukuhambela kwakhe kokuqala e-Antarctic lapho ekhonza emkhunjini wokusiza. Waphinde waya e-Antarctic, kulokhu eholwa u-Ernest Shackleton, ohambweni lwe-Nimrod  <response>: lapho ayeyisikhulu sesithathu futhi engumshayeli wesikebhe. 