Corning Corporation purchased a computer system (accounted for as Office Equipment) for $60,000 on January 1, 2012. It was depreciated based on a seven-year life and an $18,000 residual value. On January 1, 2014, Corning revised these estimates to a total useful life of four years and a residual value of $10,000. Prepare Corning's entry to record 2014 depreciation expense. Assume that Corning follows IFRS and uses straight-line depreciation.