Original sentence: In 1979, Marien published L'Activité Surréaliste en Belgique, a chronological record of all the documents, manifestos, tracts and articles pertaining to the the surrealist movement in Belgium that appeared between 1924 and 1950
Edited sentence: In 1979, Marien published L'Activité Surréaliste en Belgique, a chronological record of all the documents, manifestos, tracts and articles pertaining to the surrealist movement in Belgium that appeared between 1924 and 1950