Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: Integral Field Spectroscopy of a sample of nearby galaxies. I. Sample,
  Observations and Data Reduction
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
2
The categories of this paper are: math
37
The categories of this paper are: supr-con