It’s a story which much too sadly resembles that of former New York Times journalist David E. Rosenbaum: a medical examiner has ruled that Edward L. Givens, a 39-year-old resident of Northeast Washington, died of a heart attack late last year after paramedics adjudged him to be simply suffering from a bad case of heartburn. Givens’ family is planning to sue the city for “individual acts of negligence.” Reportedly, emergency medical workers who responded to…