Complex sentence: The Comb Ceramic Culture or the Pit-Comb Ware culture was a North-East European stone age culture, ca 4200 BC-2000 BC. The name is derived from the most common decoration on the ceramic finds that look like the imprints of a comb.
Split into simpler sentences: The Comb Ceramic Culture or Pit-Comb Ware culture was a northeast European stone age culture. It flourished from around 4200 BC to around 2000 BC. The name is derived from the most common type of decoration on its ceramics, which looks like the imprints of a comb.