Problem: Does "This suggests that everything that separates us from chimpanzees must be encoded in that very small amount of DNA, including our behaviors." answer the question "About how long ago did modern human beings first come into existence?"

A: no

Problem: Does "In the last years of the nineteenth century, Planck was investigating the problem of black-body radiation first posed by Kirchhoff some forty years earlier." answer the question "What was Planck studying in the last part of the nineteenth century?"

A: yes

Problem: Does "The Emakhandzambili clans were initially incorporated into the kingdom with wide autonomy, often including grants of special ritual and political status." answer the question "What groups did Mswati attack in the mid 19th century?"

A:
yes