TOKYO — In an unusual move, prosecutors will call three former members of the Aum Shinrikyo religious cult to testify in the trial of another former Aum member, Makoto Hirata, in a lay judge trial expected to begin at the Tokyo District Court later this year. It will be the first time that death-row inmates have been called to tesify as witnesses, Sankei Shimbun reported Saturday. The three are Tomomasa Nakagawa, 50, Yasuo Hayashi, 55, and Yoshihiro Inoue, 43. They are among 13 former Aum Shinrikyo members, including cult founder Shoko Asahara, who were sentenced to death for the 1995 Tokyo subway nerve gas attack, and several other crimes, including murder and kidnapping. Hirata, 48, has been indicted for his role in the kidnapping and murder of a relative of a cult member in 1995. A few weeks later, on March 20, 1995, cult members used sarin gas on the Tokyo subway, leaving 13 people dead and about 6,300 injured. The coordinated attacks at stations near the center of J