/// <summary>
/// Marks this phraseText internally as UNknown. This does not mark any outside knowledge base.
/// </summary>
private void MarkPhraseUnknown(string phraseText)
{
if (IsPhraseKnown(phraseText))
{
KnownPhraseTexts.Remove(phraseText);
}
}
/// <summary>
/// Marks this phraseText internally as known. This does not mark any outside knowledge base.
/// </summary>
private void MarkPhraseKnown(string phraseText)
{
if (!IsPhraseKnown(phraseText))
{
KnownPhraseTexts.Add(phraseText);
}
}