Question: Who died earlier, Theodor Kotsch or Herbert Walther?

Knowledge 1: Herbert Walther
Herbert Walther( January 19, 1935 in Ludwigshafen/ Rhein, Germany – July 22, 2006 in Munich) was a leader in the fields of quantum optics and laser physics.He was a founding director of the Max Planck Institute of Quantum Optics( MPQ) in Garching, Germany.He also was Chair of Physics at Ludwig Maximilian University of Munich.He is primarily known for his experimental work on cavity quantum electrodynamics( in the form of the micromaser) as well his groundbreaking work on the ion trap.At the time of his death he had over 600 publications and numerous awards from a number of prestigious physics and optics societies.In 1988 he received the Einstein Prize for Laser Science, in 1990 he received the Charles Hard Townes Award, in 1993 the Albert A. Michelson Medal from the Franklin Institute in Philadelphia and in 2003 the Frederic Ives Medal of The Optical Society. [SEP] Knowledge 2: Theodor Kotsch
Theodor Kotsch( January 6, 1818 – November 27, 1884) was a German landscape painter.Kotsch was born in Hanover.He went to Munich in 1839, where he developed his style by studying other masters and through landscape painting.In 1845 he returned to Hanover, and then in 1854 moved to Karlsruhe, where he joined the studio of Johann Wilhelm Schirmer.In 1870 he established himself in Munich, and died there in 1884.His landscapes are very realistic and carefully composed, and usually taken from the Harz, Upper Bavaria, and Swabia.He also produced a number of studies of trees in chalk and pencil.
Knowledge 1: Theodor Kotsch
Theodor Kotsch( January 6, 1818 – November 27, 1884) was a German landscape painter.Kotsch was born in Hanover.He went to Munich in 1839, where he developed his style by studying other masters and through landscape painting.In 1845 he returned to Hanover, and then in 1854 moved to Karlsruhe, where he joined the studio of Johann Wilhelm Schirmer.In 1870 he established himself in Munich, and died there in 1884.His landscapes are very realistic and carefully composed, and usually taken from the Harz, Upper Bavaria, and Swabia.He also produced a number of studies of trees in chalk and pencil. [SEP] Knowledge 2: Hélène Grenier
Hélène Grenier was a Canadian librarian born in 1900 who died in 1992.
Knowledge 1: Theodor Kotsch
Theodor Kotsch( January 6, 1818 – November 27, 1884) was a German landscape painter.Kotsch was born in Hanover.He went to Munich in 1839, where he developed his style by studying other masters and through landscape painting.In 1845 he returned to Hanover, and then in 1854 moved to Karlsruhe, where he joined the studio of Johann Wilhelm Schirmer.In 1870 he established himself in Munich, and died there in 1884.His landscapes are very realistic and carefully composed, and usually taken from the Harz, Upper Bavaria, and Swabia.He also produced a number of studies of trees in chalk and pencil. [SEP] Knowledge 2: Johnny Bell (Canadian football)
John Neil Bell (October 4, 1921 – August 17, 1998) was a Canadian football player who played for the Regina/Saskatchewan Roughriders from 1946 to 1952.He played junior football for the Parkdale Lions.In 1998, he was inducted into the Roughriders' Plaza of Honour.He died earlier that year of a heart condition, aged 76.

Answer: Theodor Kotsch