Complex sentence: Later after several meetings it was decided that the incumbent President Maithreepala Sirisena should be named as the Leader of the SLFP, but it was also decided that SLFP Would be sitting as the Opposition and MP Nimal Siripala de Silva would be the Opposition Leader.
Split into simpler sentences: Later after several meetings it was decided that the incumbent President Maithreepala Sirisena should be named as the Leader of the SLFP. But it was also decided that SLFP Would be sitting as the Opposition and MP Nimal Siripala de Silva would be the Opposition Leader.