A Columbus woman was sentenced to 18 months in prison yesterday for sending e-mails to the FBI last fall that said she would kill President Bush and send anthrax to schools, the U.S. attorney general said. Alemash Alemayehu, 24, sent the e-mails to the FBI's Web site that collects tips on terrorist activity, prosecutors said. She pleaded guilty to the charges in January before U.S. District Court Judge Algenon L. Marbley. There is no evidence that Alemayehu possessed anthrax, U.S. Attorney Gregory Lockhart said. In an e-mail Sept. 29, she said she would "destroy the white house and kill the...