
1) CXI CXI CXI CXI CXI 2) Mid 6th-century date 3) Roman 555 4) XXXVII x XV
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https://www.crosswordclues.com/clue/dlv

The DLV (DataLog with Disjunction, whereas the logical disjunction symbol V is used) system is a disjunctive logic programming system, implementing the stable model semantics under the Answer set programming paradigm. It extends the datalog language to allow the use of OR in rules. The tutorial page gives a simple example modeling some laughing wh...
Found on
http://en.wikipedia.org/wiki/DLV
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