Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: HST imaging and Keck Spectroscopy of z~6 I-band Drop-Out Galaxies in the
  ACS GOODS Fields
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
2
The categories of this paper are: math
18
The categories of this paper are: econ