Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: White paper on EUSO-SPB2   EUSO-SPB2 is a second generation Extreme Universe Space Observatory (EUSO) on
a Super-Pressure Balloon (SPB). This document describes the physics
capabilities, the proposed technical design of the instruments, and the
simulation and analysis software.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn