Complex sentence: The prosecution called as witnesses fire-prevention consultants who had inspected the castle and recommended the installation of sprinklers or smoke alarms; and told the trial jury that after five years of semiannual inspections, the devices were not in place when the attraction burned.
Split into simpler sentences: The prosecution called as witnesses fire-prevention consultants who had inspected the castle, and who had recommended the installation of sprinklers or smoke alarms. They told the jury that after five years of semiannual inspections, the devices were not in place when the attraction burned.