With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: In 1980, Antonioni made "Il mistero di Oberwald" ("The Mystery of Oberwald"), an experiment in the electronic treatment of color, recorded in video then transferred to film, featuring Monica Vitti once more. It is based on Jean Cocteau's play "L'Aigle à deux têtes" ("The Eagle With Two Heads"). "Identificazione di una donna" ("Identification of a Woman", 1982), filmed in Italy, deals one more time with the recursive subjects of his Italian trilogy. In 1985, Antonioni suffered a stroke, which left him partly paralyzed and unable to speak. However, he continued to make films, including "Beyond the Clouds" (1995), for which Wim Wenders filmed some scenes. As Wenders has explained, Antonioni rejected almost all the material filmed by Wenders during the editing, except for a few short interludes. They shared the FIPRESCI Prize at the Venice Film Festival with "Cyclo".
text_B: Would learning sign language have been a useful pursuit for Antonioni after his stroke, if he wished to communicate without external aids?
YES.