Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sample no IEE 15070003 description: ammocoetes of Lethenteron
  camtschaticum (TILESIUS, 1811) (PETROMYZONTIDAE, PETROMYZONTIFORMES) from
  Malaya Khuzi River (Sakhalin)   Paper provides biological description of both males and females of Arctic
lamprey, Lethenteron camtschaticum ammocoetes from one of Sakhalin rivers,
Malaya Khuzi. It briefly describes stages of development of the larvae gonads
and cases of infantilism and transverse.

36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph