SRL for [exploded]: Pan Am has subpoenaed several government agencies , including the CIA and FBI , to determine whether they were warned that a bomb had been planted aboard a jet that [exploded] over Scotland last December , killing 270 people .
ARG-1: a jet | R-ARG-1: that | ARG-M-LOC: over Scotland | ARG-M-TMP: last December | ARG-M-ADV: killing 270 people