public static bool IsClause(IAdTree adTree, IAttributesModel attributesModel) { var found = adTree?.GetRightSequence().FirstOrDefault(x => attributesModel.IsVerb(x.Morpheme.Attributes) || attributesModel.IsU(x.Morpheme.Attributes)); var result = found != null && attributesModel.IsVerb(found.Morpheme.Attributes); return(result); }