Suppose Agatha Christie was a British writer known for her detective novels and short story collections, particularly those revolving around her fictional detectives Hercule Poirot and Miss Marple. Christie's works have been adapted into numerous films, television series, and stage plays, making her one of the most famous authors in the mystery genre.
Can we infer that "Agatha Christie's novels have never been adapted into film or television."? Yes, no, or maybe?