I want to know the answer to the following question:
Hammer and others recently aimed to test what claim about how closely related present-day Jews are to what group?
All the background I'm provided with is that "As an example, she refers to recent work by Hammer et al., which aimed to test the claim that present-day Jews are more closely related to one another than to neighbouring non-Jewish populations.". Is that enough to answer the question?
Answer: yes