Question:  The Miracle worker is based on this person who was the first blind and deaf person to earn a degree in what?
Sentence (from "Rennellese Sign Language"): It was developed about 1915 by a deaf person named Kagobai and used by his hearing family and friends, but apparently died with him; he was the only deaf person on the island, and there never was an established, self-replicating community of signers.
Relevant evidence: No