         Sentence .1: Notwithstanding, :.even. the ‘brief   glimpses" afforded -by. such investigations” can  Provide . some. insight. into -ciywizations.. that   existed hundreds ot in some’ cases, thousands of”  years cartier.    Seritence 2: Going back ahd ‘e-anialyzing known.  language samples and éxtrapolating upon them  telis us about ancient civilizations.