(The others are the sword, which resides at the Atsuta Shrine in Nagoya, and the jewel, kept in the Imperial Palace in Tokyo. )
The jewel resides in a Shinto temple in Osaka.
mnli hypothesis: The jewel resides in a Shinto temple in Osaka. premise: (The others are the sword, which resides at the Atsuta Shrine in Nagoya, and the jewel, kept in the Imperial Palace in Tokyo. )