GENEVA — A man stabbed and wounded three people in what authorities described as an “act of terror” at the train station in the Swiss city of Winterthur on Thursday before being arrested. The attack took place shortly before 8:30 a.m. The suspect, who was arrested five minutes after emergency services were alerted, is a 31-year-old Swiss-Turkish dual national who lives in Winterthur, regional police chief Marius Weyermann said. He had come to authorities’ attention in 2015 for distributing