Simplify the following text for a Grade 7 native English-speaking person.
Original: He is the fourth person to be awarded the Nobel Peace Prize while in prison or detention , after Germany 's Carl von Ossietzky ( 1935 ) , the Soviet Union 's Andrei Sakharov ( 1975 ) , and Myanmar 's Aung San Suu Kyi ( 1991 ) .
Simplified: He is also the third person to win the Nobel Peace Prize while in prison or detention . The others were Germany 's Carl von Ossietzky in 1935 and Myanmar 's Aung San Suu Kyi in 1991 .