Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Hamburg/ESO R-process Enhanced Star survey (HERES). I. Project
  description, and discovery of two stars with strong enhancements of
  neutron-capture elements
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
16
The categories of this paper are: stat