With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Al Gore is a former alcoholic.
text_B: Ancient Thera is an antique city on a ridge of the steep , 360 m high Messavouno mountain on the Greek island of Santorini .. Greek. Greece. Santorini. Santorini. It was named after the mythical ruler of the island , Theras , and was inhabited from the 9th century BCE until 726 CE .. Starting in 1895 the city was systematically investigated by Friedrich Hiller von Gaertringen , who excavated there until 1904 .. Friedrich Hiller von Gaertringen. Friedrich Hiller von Gaertringen. Later excavations by N. Zapheiropoulos between 1961 and 1982 under the auspices of the Archaeological Society of Athens unearthed the city 's necropolis in Sellada .. necropolis. necropolis. Sellada. Sellada. Findings from these excavations are on exhibit at the archaeological museum in Fira .. Fira. Fira. Excavation work was again taken up between 1990 and 1994 under the leadership of Wolfram Hoepfner of the Free University of Berlin and resulted in a more precise understanding of the history of the southern Aegean .. Wolfram Hoepfner. Wolfram Hoepfner. Free University of Berlin. Free University of Berlin. Aegean. Aegean islands. Ancient Thera is today open to the public and can be reached on a winding road that starts at Kamari or several foot paths from both sides of the mountain .
not_related.