Complex sentence: At about this time Russian Nostraticists, notably Sergei Starostin, constructed a revised version of Nostratic which was slightly broader than Greenberg's grouping but which similarly left out Afroasiatic.
Split into simpler sentences: At about this time, Russian Nostraticists, notably Sergei Starostin, constructed a revised version of Nostratic. It was slightly broader than Greenberg's grouping but it also left out Afroasiatic.