Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Functorial Question Answering   Distributional compositional (DisCo) models are functors that compute the
meaning of a sentence from the meaning of its words. We show that DisCo models
in the category of sets and relations correspond precisely to relational
databases. As a consequence, we get complexity-theoretic reductions from
semantics and entailment of a fragment of natural language to evaluation and
containment of conjunctive queries, respectively. Finally, we define question
answering as an NP-complete problem.

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The categories of this paper are: solv-int
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an