<prompt> Answer this question truthfullyWhat is the DNA of human beings?  <response>: <reason> The weak interstadial corresponding to GIS 2 occurred about 23.2 kyr B.P. GIS 2 start 21.556 to GIS 2 end 21.407 ka BP. Heinrich Event 2 H2 extends 22-25.62 ka BP. The δ18O values from GISP-2 follow the diagram of Wolfgang Weißmüller. The positions of the Dansgaard-Oeschger events DO1 to DO4 and the Heinrich events H1 to H3 are also indicated. DV 3-4 and DV 6-7 are cold events marked by ice wedges in the upper loess of Dolní Veštonice. 