In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

The Lower Cretaceous is the first geological epoch in the Cretaceous .
The Early Cretaceous ( geochronological name ) or the Lower Cretaceous ( chronostratigraphic name ) , is the earlier or lower of the two major divisions of the Cretaceous .

The Convention also says that any toxic chemical is a chemical weapon unless it is used for legal reasons .
Under this Convention , any toxic chemical , regardless of its origin , is considered a chemical weapon unless it is used for purposes that are not prohibited ( an important legal definition known as the General Purpose Criterion ) .

Along with her twin sister Miriam , Kor was experimented by Josef Mengele at the Auschwitz during World War II .

Along with her twin sister Miriam , Kor was subjected to human experimentation under the direction of Josef Mengele at the Auschwitz concentration camp in German-occupied Poland during World War II .