Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Velocity dispersion and dynamical masses for 388 Galaxy Clusters and
  groups. Calibrating the $M_{\rm SZ}$--$M_{\rm dyn}$ scaling relation for the
  PSZ2 sample
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex