Nineteen political prisoners were released by the government of Myanmar over the weekend, the human rights group Amnesty International reported Tuesday. Among those released was Ma Khin Khin Leh, who was serving a life sentence because her husband, a student activist, had helped plan a protest demonstration in Bago in July 1999, according to Amnesty International USA’s Web blog Authorities prevented the demonstration from taking place, but took the woman and her three-year-old daughter into custody after failing to find her husband, Amnesty International said.