Its social purpose is presenting in

Its social purpose is presenting information about something. They generally describe an entire class of things, whether natural or made: mammals, the planets, rocks, plants, countries of region, culture, transportation, and so on.

Hasil (Bahasa Indonesia) 2:

Tujuan sosial menyajikan informasi tentang sesuatu. Mereka umumnya menggambarkan seluruh kelas hal, baik alami atau dibuat: mamalia, planet-planet, batu, tanaman, negara-negara di kawasan, budaya, transportasi, dan sebagainya.