TOKYO, May 20 (Reuters) - Japanese government bond yields rose on Thursday, tracking a sharp overnight gain in U.S. Treasury yields after minutes from the Federal Reserve’s policy meeting revealed there was more talk of tapering its bond purchases than investors had expected. ** A weak response to the Bank of Japan’s bond-buying operation weighed on investor sentiment. * The 10-year JGB yield rose 0.5 basis point to 0.075%. * The 20-year JGB yield rose 0.5 basis point to 0.445%. * The 30-year JGB yield rose one basis point to 0.665%. * The two-year JGB yield was flat at minus 0.130%. * The five-year yield rose 0.5 basis point to minus 0.095%. * The 40-year JGB yield rose 0.5 basis point to 0.710%. * Benchmark 10-year JGB futures fell 0.06 point to 151.38, with a trading volume of 11,132 lots. (Reporting by Tokyo markets team, Editing by Sherry Jacob-Phillips) Our Standards: The Thomson Reuters Trust Principles.