Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Axis of Opportunity: The Large-Scale Correlation of Elliptical
  Galaxies   This paper has been withdrawn by the author due to the discovery of a serious
bias resulting from the systematic dimming of galaxies with larger
ellipticities away from the North Galactic Pole. Thus the conclusion that there
is a special axis along which the elliptical galaxies tend to be aligned is
incorrect.

16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs