Berlin Mayor Eberhard Diepgen, who is visiting Japan through Oct. 8, paid a courtesy call Oct. 6 on Tokyo Gov. Yukio Aoshima and signed an agreement to cooperate in sewage and fiber-optic cable projects.Berlin and Tokyo are proceeding with a project to lay fiber-optic cables along sewage facilities. The two cities agreed to exchange technological information and opinions over the projects.The mayor came to the Tokyo Metropolitan Government office building around 4 p.m., meeting the governor to discuss urban issues such as waste recycling. He presented a chess set made from recycled garbage to Aoshima, and the governor presented a square card with the lyrics of "Sudara-bushi," a hit song from 1961 written by the comedian-turned-governor.The delegation arrived at Narita airport in the morning. It plans to attend a commemoration symposium Oct. 7 at Edo-Tokyo Museum in Sumida Ward.
