Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diet Soda and Liquid Nitrogen   Letter to the Editor about how the diet soda and Mentos reaction can be
produced by the direct immersion of a plastic soda bottle in liquid nitrogen.

2
The categories of this paper are: math
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom