Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light and Dark in the Universe   Translation of a popular article on MOND vs. dark matter that appeared, in
Hebrew, in the Israeli magazine "Odyssea", dedicated to "thoughts and ideas in
the forefront of science and philosophy".

7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat