With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Martin Scorsese founded The Film Foundation in 1988.
text_B: Film preservation , or film restoration , describes a series of ongoing efforts among film historians , archivists , museums , cinematheques , and non-profit organizations to rescue decaying film stock and preserve the images which they contain .. film stock. film stock. In the widest sense , preservation nowadays assures that a movie will continue to exist in as close to its original form as possible .. For many years the term `` preservation '' was synonymous with `` duplication '' of film .. The goal of a preservationist was to create a durable copy without any significant loss of quality .. quality. image quality. In more modern terms , film preservation now includes the concepts of handling , duplication , storage , and access .. The archivist seeks to protect the film and share the content with the public .. Film preservation is not to be confused with film revisionism , in which long-completed films are subjected to outtakes never previously seen being inserted , newly inserted music scores or sound effects being added , black-and-white film being colorized or converted to Dolby stereo , or minor edits and other cosmetic changes being made .. revisionism. Revisionism ( fictional ). colorized. Film colorization. Dolby. Dolby. edits. film editing. By the 1980s , it was becoming apparent that the collections of motion picture heritage were at risk of becoming lost .. Not only was the preservation of nitrate film an ongoing problem , but the discovery that safety film , used as a replacement for the more volatile nitrate stock , was beginning to be affected by a unique form of decay known as `` vinegar syndrome '' , and color film manufactured , in particular , by Eastman Kodak , was found to be at risk of fading .. nitrate film. Nitrocellulose#Nitrate film. vinegar syndrome. Cellulose acetate film#Decay and the vinegar syndrome. Eastman Kodak. Eastman Kodak. At that time , the best known solution was to duplicate the original film onto a more secure medium .. 90 percent of all American silent films made before 1929 and 50 percent of American sound films made before 1950 are lost films .. silent films. silent films. lost films. lost films. Although institutional practices of film preservation date back to the 1930s , the field received an official status only in 1980 , when UNESCO recognized `` moving images '' as an integral part of the world 's cultural heritage .
not_related.