Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Plenary talk presented at Workshop on High Energy Physics&Field Theory
  (Protvino, Russia, 2004)   The problems concerning a possible discovery of the mini block holes at
earthly accelerators are discussed.

4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat