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I am looking for a program or web service that can convert sentences into propositional logic, if possible running on Windows or Linux and open source.

Examples:

  • Let p = It is raining
  • Let q = Mary is sick

Then:

  • "It is not the case that Mary isn’t sick" should be converted into "¬¬q"
  • "It is raining and Mary is sick" should be converted into "p ∧ q"
  • "If it is raining, then Mary is sick"should be converted into "p → q"
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This sounds like the sort of thing that you should be investigating python natural language toolkit, (nltk), and sci-kit learn for. They are free, multi-platform and open source.

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