Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: EQL -- an extremely easy to learn knowledge graph query language,
  achieving highspeed and precise search   EQL, also named as Extremely Simple Query Language, can be widely used in the
field of knowledge graph, precise search, strong artificial intelligence,
database, smart speaker ,patent search and other fields. EQL adopt the
principle of minimalism in design and pursues simplicity and easy to learn so
that everyone can master it quickly. EQL language and lambda calculus are
interconvertible, that reveals the mathematical nature of EQL language, and
lays a solid foundation for rigor and logical integrity of EQL language. The
EQL language and a comprehensive knowledge graph system with the world's
commonsense can together form the foundation of strong AI in the future, and
make up for the current lack of understanding of world's commonsense by current
AI system. EQL language can be used not only by humans, but also as a basic
language for data query and data exchange between robots.

8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
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The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph