Question: What type of entertainment products do 221B Baker Street and Entdecker make?
Sentence (from "221B Baker Street (board game)"): 221B Baker Street: The Master Detective Game is a board game featuring Arthur Conan Doyle's fictional detective Sherlock Holmes and developed by Jay Moriarty (dba Antler Productions) in 1975 and sold by the John N. Hansen Co. in the US since 1977.
Relevant evidence: Yes