public void sentence()
{
difficulty = 1;
paragraphArticle = CategorySelection.listOfParagraphs.Find(x => (x.difficulty == difficulty && x.category.Contains(CategorySelection.category) && x.article.Contains(ArticleSelection.article)));
if (paragraphArticle != null) {
makeQuestion ();
SceneManager.LoadScene ("Paragraph");
}
}
// Use this for initialization
void Start()
{
paragraphArticle = null;
}