Rule Death Accidental*At StadiumPITTSBURGH (AP)-The Allegheny County coroner’s office has ruled that the death of an East McKeesport youth who fell from an exit ramp at Three Rivers Stadium last month was accidental.But the attorney for the family of 17-year-old Joseph Farrell'' says he may sue the stadium’s concessionaire for allegedly allowing the sale of beer to the youth before his death.At a coroner’s hearing Tuesday two high school pupils testified that Farrell had purchased beer from vendors at the stadium just before he fell 82 feet to the pavement outside the stadium, April 18, following the Pittsburgh Pirates home opener.Police said Farrell was trying to leap across a five-foot opening between two exit ' ramps.Attorney Joseph Maurizzi said testimony from Tuesday’s hearing showed that illegal beer sales were responsible for Farrell’s death.The two youths who testified admitted that they also purchased several beers at the stadium from vendors.