Ann, Irene, and Bob incorporate their respective businesses and form Dove Corporation. Ann exchanges her property (basis of $100,000 and fair market value of $400,000) for 200 shares in Dove Corporation on March 3, 2008. Irene exchanges her property (basis of $140,000 and fair market value of $600,000) for 300 shares in Dove Corporation on April 10, 2008. Bob transfers his property (basis of $250,000 and fair market value of $1,000,000) for 500 shares in Dove Corporation on May 17, 2010. Bob's transfer is not part of a prearranged plan with Ann and Irene to incorporate their businesses. What gain, if any, will Bob recognize on the transfer?