. . "Testimony of George K. Yin, chief of staff of the Joint Committee on Taxation, at a hearing of the House Committee on Ways and Means on \"an overview of the tax-exempt sector\"" . "Overview of the tax-exempt sector" . "Testimony of George K. Yin, chief of staff of the Joint Committee on Taxation, at a hearing of the House Committee on Ways and Means on \"an overview of the tax-exempt sector\""@en . . . . . . . . . . . . . . .