Tanggungjawab Notaris dan Pejabat Pembuat Akta Tanah Terhadap Akta Kuasa Menjual Sebagai Dasar Penerbitan Akta Jual Beli Hak Atas Tanah (Studi Putusan Pengadilan Negeri Kota Tanjungpinang Nomor 54/Pdt.G/2020/PN.TPG) = The Responsibilities of Notary and Conveyancer to the Deed of Attorney to Sell as the Basic for The Issuence of The Deed of Sale and Purchase of Interest in Land (Case Study on Tanjungpinang City District Court Decision Number 54/Pdt.G/2020/PN.TPG)