original_query: Who were the individuals involved in the trial?
query: Who were the individuals involved in the trials related to the Helios Airways Flight 522 crash?
answer: The trials involved former Helios Airways employees Ianko Stoimenov, Andreas Drakos, Demetris Pantazis, Giorgos Kikidis, and Alan Irwin.  Two Britons, one Bulgarian national, and three Cypriots were also charged in an earlier trial in Athens.