A decision npon a question of fact reached as the result of a judicial ex-amlnation or Investigation by a court, jury, referee, coroner, etc. williams v. Giblin, 86 wis. 648, 57 N. W. 1111; Rhodes v. United 8tates Bank, 66 Fed. 514,13 C. 0. A. 612, 34 L. R. A. 742