premise: Susan Marie Olsen (born August 14, 1961) is an American former child actress, animal welfare advocate, artist, and former radio host. Olsen is known for her role as Cindy Brady, the youngest Brady child in the sitcom "The Brady Bunch" for the full run of the show, from 1969 to 1974.
hypothesis: Olsen had siblings on a sitcom.
reason: Olsen played the youngest Brady child in the sitcom, so there were other children in the family; the system may not be able to infer that.