public object Decline(object value)
{
if (value is IParsedPhrase)
{
IParsedPhrase phrase = (IParsedPhrase)value;
string inflected = verbs.InflectVerb(verbs.InputToBase(phrase.Text), inflection);
return(new WordPhrase(inflected, pos));
}
return(value);
}
public override Phrase Parapharse(Verbs verbs, Nouns nouns, WordNetAccess wordnet, GrammarParser.ParaphraseOptions options, List <Phrase> emphasizes, ref double prob)
{
// Can we change to passive voice?
VerbPhrase verbphrase = FindConsituent <VerbPhrase>();
NounPhrase subjphrase = FindConsituent <NounPhrase>();
if (verbphrase != null && subjphrase != null)
{
Verb verb = verbphrase.FindConsituent <Verb>();
if (verb.Word == "had" || verb.Word == "have" || verb.Word == "has")
{
verb = null; // never do passive transformations to this
}
if (verb != null && verbs.IsTransitive(verb.Word))
{
bool isToBe = Verbs.IsToBe(verb.Word);
if (!isToBe && verbphrase.IsComposed(typeof(Verb), typeof(NounPhrase)))
{ // Like "The dog ate the bone."
if (RemoveEmphasizedImprobability(.75, emphasizes, subjphrase, ref prob))
{
NounPhrase objphrase = verbphrase.FindConsituent <NounPhrase>();
Phrase newobjphrase = subjphrase.ParaphraseAsObject(verbs, nouns, wordnet, SubMoveOffFront(options), emphasizes, ref prob);
Phrase newsubjphrase = objphrase.ParaphraseAsSubject(verbs, nouns, wordnet, SubMoveToFront(options), emphasizes, ref prob);
return(new SimpleDeclarativePhrase(newsubjphrase, new VerbPhrase(new Verb(Verbs.ComposeToBe(nouns.GetPerson(objphrase.Text), verbs.GetInflection(verb.Word))), new VerbPastParticiple(verbs.InflectVerb(verb.Word, Verbs.Convert.ext_Ven)), new PrepositionalPhrase(new Preposition("by"), newobjphrase)), new Period(" .")));
}
}
else if (!isToBe && verbphrase.IsComposed(typeof(Verb), typeof(NounPhrase), typeof(PrepositionalPhrase)))
{ // Like "Joe gave a ring to Mary."
if (RemoveEmphasizedImprobability(.75, emphasizes, subjphrase, ref prob))
{
NounPhrase dirobjphrase = verbphrase.FindConsituent <NounPhrase>();
Phrase newsubjphrase = dirobjphrase.ParaphraseAsSubject(verbs, nouns, wordnet, SubMoveToFront(options), emphasizes, ref prob);
Phrase newdirobjphrase = subjphrase.ParaphraseAsObject(verbs, nouns, wordnet, SubMoveOffFront(options), emphasizes, ref prob);
PrepositionalPhrase indobjphrase = verbphrase.FindConsituent <PrepositionalPhrase>();
Phrase newindobjphrase = indobjphrase.Parapharse(verbs, nouns, wordnet, options, emphasizes, ref prob);
return(new SimpleDeclarativePhrase(newsubjphrase, new VerbPhrase(new Verb(Verbs.ComposeToBe(nouns.GetPerson(dirobjphrase.Text), verbs.GetInflection(verb.Word))), new VerbPastParticiple(verbs.InflectVerb(verb.Word, Verbs.Convert.ext_Ven)), newindobjphrase, new PrepositionalPhrase(new Preposition("by"), newdirobjphrase)), new Period(" .")));
}
}
else if (!isToBe && verbphrase.IsComposed(typeof(Verb), typeof(VerbPastParticiple), typeof(PrepositionalPhrase)))
{ // Like "The bone was eaten by the dog."
PrepositionalPhrase byphrase = verbphrase.FindConsituent <PrepositionalPhrase>();
if (byphrase.IsComposed(typeof(Preposition), typeof(NounPhrase)) && byphrase.Constituents[0].Text == "by")
{
if (RemoveEmphasizedImprobability(.4, emphasizes, subjphrase, ref prob))
{
Phrase newsubjphrase = byphrase.FindConsituent <NounPhrase>().ParaphraseAsSubject(verbs, nouns, wordnet, SubMoveToFront(options), emphasizes, ref prob);
Phrase newobjphrase = subjphrase.ParaphraseAsObject(verbs, nouns, wordnet, SubMoveOffFront(options), emphasizes, ref prob);
VerbPastParticiple oldverb = verbphrase.FindConsituent <VerbPastParticiple>();
Verb newverb = new Verb(verbs.InflectVerb(oldverb.Word, verbs.GetInflection(verb.Word)));
return(new SimpleDeclarativePhrase(newsubjphrase, new VerbPhrase(newverb, newobjphrase), new Period(" .")));
}
}
}
else if (!isToBe && verbphrase.IsComposed(typeof(Verb), typeof(VerbPastParticiple), typeof(PrepositionalPhrase), typeof(PrepositionalPhrase)))
{ // Like "A ring was given to Mary by Joe."
PrepositionalPhrase indobjphrase = verbphrase.FindConsituent <PrepositionalPhrase>(0);
PrepositionalPhrase byphrase = verbphrase.FindConsituent <PrepositionalPhrase>(1);
if (byphrase.IsComposed(typeof(Preposition), typeof(NounPhrase)) && byphrase.Constituents[0].Text == "by")
{
if (RemoveEmphasizedImprobability(.4, emphasizes, subjphrase, ref prob))
{
Phrase newsubjphrase = byphrase.FindConsituent <NounPhrase>().ParaphraseAsSubject(verbs, nouns, wordnet, SubMoveToFront(options), emphasizes, ref prob);
Phrase newobjphrase = subjphrase.ParaphraseAsObject(verbs, nouns, wordnet, SubMoveOffFront(options), emphasizes, ref prob);
VerbPastParticiple oldverb = verbphrase.FindConsituent <VerbPastParticiple>();
Verb newverb = new Verb(verbs.InflectVerb(oldverb.Word, verbs.GetInflection(verb.Word)));
return(new SimpleDeclarativePhrase(newsubjphrase, new VerbPhrase(newverb, newobjphrase, indobjphrase), new Period(" .")));
}
}
}
else if (isToBe && verbphrase.IsComposed(typeof(Verb), typeof(PrepositionalPhrase)))
{ // Like "The fly is on the wall."
if (RemoveEmphasizedImprobability(.6, emphasizes, subjphrase, ref prob))
{
Phrase newobjphrase = subjphrase.ParaphraseAsObject(verbs, nouns, wordnet, SubMoveOffFront(options), emphasizes, ref prob);
Phrase newprepphrase = verbphrase.FindConsituent <PrepositionalPhrase>().Parapharse(verbs, nouns, wordnet, options, emphasizes, ref prob);
return(new SimpleDeclarativePhrase(new ExistentialThere("There"), new VerbPhrase(verb, newobjphrase, newprepphrase), new Period(" .")));
}
}
}
}
ExistentialThere there = FindConsituent <ExistentialThere>();
if (verbphrase != null && there != null)
{
Verb verb = verbphrase.FindConsituent <Verb>();
if (Verbs.IsToBe(verb.Word) && verbphrase.IsComposed(typeof(Verb), typeof(NounPhrase), typeof(PrepositionalPhrase)))
{ // Like "There is a fly on the wall."
if (RemoveUnemphasizedImprobability(.4, emphasizes, verbphrase.Constituents[1], ref prob))
{
Phrase newsubjphrase = verbphrase.FindConsituent <NounPhrase>().ParaphraseAsSubject(verbs, nouns, wordnet, SubMoveToFront(options), emphasizes, ref prob);
Phrase newprepphrase = verbphrase.FindConsituent <PrepositionalPhrase>().Parapharse(verbs, nouns, wordnet, options, emphasizes, ref prob);
return(new SimpleDeclarativePhrase(newsubjphrase, new VerbPhrase(verb, newprepphrase), new Period(" .")));
}
}
}
return(base.Parapharse(verbs, nouns, wordnet, options, emphasizes, ref prob));
}