Input (grade 13): Nikolaus August Otto (14 June 1832, Holzhausen an der Haide, Nassau - 26 January 1891, Cologne) was the German inventor of the first internal-combustion engine to efficiently burn fuel directly in a piston chamber.
Output (grade 8): Nikolaus August Otto (June 14, 1832 - January 28, 1891) was a German engineer.