 Two children killed, six others hurt in a rollover crash on I-94 in Stutsman County just before 5 p.m. yesterday, seven miles west of Jamestown. State Patrol says the driver lost control after being passed by a semi rolling into a water-filled slough. Two boys, ages 10 and 7, died at the scene. The driver, a 30-year-old woman from Clarksville,