CREATE TABLE table_60440 ("Year" FLOAT, "Dates" TEXT, "Champion" TEXT, "Country" TEXT, "Score" TEXT, "Tournament Location" TEXT, "Purse" TEXT, "Winner's Share" TEXT)

What dates was champion masahiro kawamura at the ibaraki country club tournament?
SELECT "Dates" FROM table_60440 WHERE "Tournament Location" = 'ibaraki country club' AND "Champion" = 'masahiro kawamura'
SELECT "Dates" FROM "table_60440" WHERE "Champion" = 'masahiro kawamura' AND "Tournament Location" = 'ibaraki country club'