関武夫さんという自然を愛している方が生前持っていた森を、ご遺族の方が（財）埼玉県生態系保護協会に寄付したんですね。 Intuitively, The natural variety n could be the typical house of all sets that have n components. So, it seems natural to outline n as an equivalence class underneath the relation "can be manufactured in a single to at least one correspondence". 関さんの森、という言葉の響... https://ayurvedicprostatehealthsupplements.blogspot.com