Suppose The Mt. Kinka Ropeway (金華山ロープウェー , Kinkazan Rōpuwē ) is Japanese aerial lift line in Gifu, Gifu. This is the only line Gifu Kankō Ropeway (岐阜観光索道 , Gifu Kankō Sakudō ) operates. The company belongs to Meitetsu Group. The line, opened in 1955, climbs Mount Kinka, linking Gifu Park and Gifu Castle.
Can we infer that "The Mt. Kinka Ropeway was opened 5 years before 1960"? Yes, no, or maybe?
Suppose The Mt. Kinka Ropeway (金華山ロープウェー , Kinkazan Rōpuwē ) is Japanese aerial lift line in Gifu, Gifu. This is the only line Gifu Kankō Ropeway (岐阜観光索道 , Gifu Kankō Sakudō ) operates. The company belongs to Meitetsu Group. The line, opened in 1955, climbs Mount Kinka, linking Gifu Park and Gifu Castle. Can we infer that "The Mt. Kinka Ropeway was opened 5 years before 1960"? Yes, no, or maybe?