premise: Melinda Heather "Mindy" Cohn (born May 20, 1966) is an American actress, voice actress, comedian and singer. She is known for her role as Natalie Green, the student of Edna Garrett (played by Charlotte Rae) in the long-running sitcom "The Facts of Life", and for being the voice of Velma Dinkley in the "Scooby-Doo" franchise from 2002 to 2015.
hypothesis: Melinda Heather "Mindy" Cohn  is likely still alive
reason: no death date after birth date means person is likely still alive, the system did not assume this