Simplify the following text for a Grade 9 native English-speaking person.
Original: Alfonso GarcÃ a Robles ( 20 March 1911 -- 2 September 1991 ) was a Mexican diplomat and politician who , in conjunction with Sweden 's Alva Myrdal , received the Nobel Peace Prize in 1982 .
Simplified: Alfonso GarcÃ a Robles ( 20 March 1911 -- 2 September 1991 ) was a Mexican diplomat and politician . GarcÃ a Robles received the Nobel Peace Prize in 1982 , together with Sweden 's Alva Myrdal .