Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Liquid ring   This article describes the fluid dynamics video for "Liquid ring" presented
at the 64th Annual Meeting of the APS Division of Fluid Dynamics in Baltimore,
Maryland, November 20-22, 2011.

12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int