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Datum[1] is a simple question answering[2] system. Natural language parsing and
generation is achieved through the use of templates. Fact retrieval and
inference is performed by a Datalog[3] implementation, which uses the
"execution of concurrent machines" approach as described in [4]. The fact and
rule databases are backed by JDO, so should be compatible with any database
system supported by a JDO implementation e.g. DataNucleus[5].

Datum depends on the following libraries:
- DataNucleus [5]
- ANTLR v3 [6]
- Apache Commons Lang [7]

See the INSTALL file for compilation and usage information.

[1] http://da.vidr.cc/projects/datum/
[2] http://en.wikipedia.org/wiki/Question_answering
[3] http://en.wikipedia.org/wiki/Datalog
[4] http://www.cs.sunysb.edu/~warren/xsbbook/node15.html
[5] http://www.datanucleus.org/
[6] http://antlr.org/
[7] http://commons.apache.org/lang/