private ITerm TryGetPredicate()
{
ITerm result = null;
var verb = AdTree.GetRightSequence().FirstOrDefault(x => AttributesModel.IsVerb(x.Morpheme.Attributes));
if (verb != null)
{
IAdTree predicateAdTree;
var verbValencies = AttributesModel.GetNumberOfValencies(verb.Morpheme.Attributes);
if (verbValencies > 0)
{
predicateAdTree = verb.GetSequenceToRoot()
.First(x => x.AdPosition == null || AttributesModel.IsU(x.AdPosition.Morpheme.Attributes))
.MakeDeepCopy();
// Remove the subject (i.e. remove the sub-adtree on the first valency)
var firstValency = predicateAdTree.GetRightSequence().FirstOrDefault(x => x.Pattern.ValencyPosition == 1);
if (firstValency != null)
{
firstValency.Left = null;
}
}
else
{
predicateAdTree = verb.MakeDeepCopy();
result = Factory.CreateTerm(verb, StructureAttributes.Term.Predicate);
}
result = Factory.CreateTerm(predicateAdTree, StructureAttributes.Term.Predicate);
}
return(result);
}
private ITerm TryGetSubject()
{
ITerm result = null;
var verb = AdTree.RightChildren?.FirstOrDefault(x => AttributesModel.IsVerb(x.Morpheme.Attributes));
if (verb != null)
{
var valencies = AttributesModel.GetNumberOfValencies(verb.Morpheme.Attributes);
if (valencies >= 1)
{
var valency1 = verb.GetSequenceToRoot().FirstOrDefault(x => x.Pattern.ValencyPosition == 1);
if (valency1?.Left != null)
{
var subjectAdTree = valency1.Left.MakeDeepCopy();
result = Factory.CreateTerm(subjectAdTree, StructureAttributes.Term.Subject);
}
}
}
return(result);
}
