The particle の in the structure N1 の N2 is used to show that N2 is modified by N2.
田中さんは日立の社員です。
Mr. Tanaka is a Hitachi employee.
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The particle の in the structure N1 の N2 is used to show that N2 is modified by N2.
田中さんは日立の社員です。
Mr. Tanaka is a Hitachi employee.