Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Saying Hello World with GROOVE - A Solution to the TTC 2011 Instructive
  Case   This report presents a solution to the Hello World case study of TTC 2011
using GROOVE. We provide and explain the grammar that we used to solve the case
study. Every requested question of the case study was solved by a single rule
application.

33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg