internal TripletWordGroup(Predicate predicate)
{
RawGroup = predicate;
TextSpan = predicate.Name;
}
/// <summary>
/// Gets auxiliary verb from given predicate if available.
/// </summary>
/// <param name="predicate">The predicate.</param>
/// <returns>The auxiliary verb in same for as in predicate, <c>null</c> if such verb is not present.</returns>
private string findAuxiliary(Predicate predicate)
{
var text = generate(predicate);
var words = text.Split(' ');
foreach (var word in words)
{
if (_auxiliaryVerbs.Contains(word))
return word;
}
return null;
}
/// <summary>
/// Generates string representation predicate's part that can be
/// used at begining of a question.
/// </summary>
/// <param name="predicate">The predicate.</param>
/// <returns>The generated representation.</returns>
private string generateQuestionPredicatePart(Predicate predicate)
{
var auxiliaryVerb = findAuxiliary(predicate);
if (auxiliaryVerb == null)
return "do";
//questions begins with auxilar verb if possible
return auxiliaryVerb;
}
/// <summary>
/// Generates string representation predicate's part that can be
/// used at begining of a question.
/// </summary>
/// <param name="predicate">The predicate.</param>
/// <returns>The generated representation.</returns>
private string generateDependentPredicatePart(Predicate predicate)
{
var predicateText = generate(predicate);
var auxiliaryVerb = findAuxiliary(predicate);
if (auxiliaryVerb == null)
//whole predicate will be used
return predicateText;
return predicateText.Replace(auxiliaryVerb, "").Trim();
}
/// <summary>
/// Creates triplet with given subject, predicate and object.
/// </summary>
/// <param name="subject">The subject of triplet.</param>
/// <param name="predicate">The predicate of triplet.</param>
/// <param name="obj">The object of triplet.</param>
/// <returns>The created triplet wrapped into an array.</returns>
private IEnumerable<TripletTree> triplet(Entity subject, Predicate predicate, Entity obj)
{
return new[] { TripletTree.From(subject, predicate, obj) };
}